seaweeds of britain and ireland a check-list and atlas … · vii vi a check-list and atlas of the...

London: British Phycological Society

Sponsored by the Martin Ryan Institute, NUI, Galway and the Marine Institute, Dublin

With maps prepared by H. R. ArnoldBiological Records Centre, Centre for Ecology & Hydrology, Monks Wood

A Check-list and Atlas of theSeaweeds of Britain and Ireland

F. G. Hardy and M. D. Guiry

University of Newcastle upon Tyne and National University of Ireland, Galway

Martin Ryan InstituteInstitiúid Mhairtín Uí Riain

University of Newcastle upon Tyne

v

INTRODUCTION

This is number of 200 numbered copies.

© The British Phycological Society, 2003

British Library Cataloguing in Publication DataHardy, Frederick GavinGuiry, Michael Dominic RichardA Check-list and Atlas of the Seaweeds of Britain and Ireland1. Marine algae - Britain and IrelandI. Title589.3941 QK573

ISBN 0 9527115 16

10, 9, 8, 7, 6, 5, 4, 3, 2, 1

Dedicated to Linda Irvine and the late David Irvine who did so muchto improve our knowledge of the seaweeds of these islands.

Contents

Preface (By Eileen J. Cox) . . . . . . . . . . . . . . . . . . . . . . . . . . vi

General introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Check-list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Check-list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Atlas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Rhodophyceae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Phaeophyceae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

Chlorophyceae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315

Xanthophyceae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361

Appendices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370

Appendix I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371

Current names for entities in Newton’s

A Handbook of the British Seaweeds

Appendix II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403

Current names for entities in the series

Seaweeds of the British Isles

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421

viivi

A CHECK-LIST AND ATLAS OF THE SEAWEEDS OF BRITAIN AND IRELAND INTRODUCTION

The study of the marine algae of Britain and Ireland has along and distinguished history. Until well into thenineteenth century it was regarded as the norm for thoseinterested in the study of plants and in local and nationalfloras to include the algae along with all the other groupsof plants (a practise which has begun to be revived, forexample, in the new Flora of Dorset). The nineteenthcentury itself was the heyday of the “amateur naturalist”,people who pursued the study of natural history with awe-inspiring diligence and in incredible detail. A considerablenumber of illustrated books were written to enable thoseinterested in seaweeds to identify the species they found,giving advice on how to collect, and this fuelled theupsurge in an interest in flowering plants and ferns, fungi,butterflies, molluscs, birds, and, of course, seaweeds. For atime seaweed-hunting was a fashionable occupation,especially amongst ladies but certainly not exclusively so,and the many and large collections in national andprovincial herbaria bear testimony to this occupation.

During the nineteenth century also there began a greattradition of scientific studies of the algae, on theiranatomy and development in particular, and thisblossomed further as the twentieth century progressed.However, the study of the ecology, physiology andbiochemistry of the algae tended to eclipse the activities ofthe naturalist so that those amateurs interested in botanytended largely to exclude the algae from their endeavours,and the algae were in danger of becoming the preserve ofscientific professionals.

The British Phycological Society was founded in 1952,and among its initial aims was the production of a check-list of all the British species of marine algae (the studies ofthe previous century or so had produced a very largenumber of names and synonyms, and there was aconsiderable degree of confusion in making a definitiveand complete list of the correct position), the writing of anew flora so that there would be a definitive handbook forthe identification of all the British species (the latest suchhandbook, by Newton, had been published in 1931 and aconsiderable volume of work had been published in thescientific literature since that date), and a study of thedistribution of the British species. The check-list was thefirst of these projects to be completed, and this volumecontains the most up-to-date lineal descendant of thatwork. To date, seven parts of the new Seaweeds of the

British Isles have been published, one is in press, and onefurther remains to be published in order to complete theseries. Since its earliest days the Society has been asking itsmembers to submit records of the species they have found.An initial scheme was rather complicated in itsadministration and methods and, as a result, it wasdecided in the late 1960s to launch a formal Marine AlgalMapping Scheme in conjunction with the BiologicalRecords Centre at Monks Wood Experimental Station(now CEH Monks Wood).

From its very inception it has always been the practise ofthe mapping scheme to be very insistent and careful aboutthe accuracy of the records being submitted to it, and toexclude any that might be regarded as being doubtful,and that might corrupt the dataset. During its firstquarter century (from 1970) the mapping scheme wasadministered by Professor T.A. Norton; latterly (from1994) it was in the hands of Dr F.G. Hardy. The co-ordinator was assigned the task of checking the validity ofsubmitted records with the aid of two panels of refereeswho could be contacted on an individual basis: one set ofreferees included experts on particular species or groups ofspecies (particularly important when one is working witha group of organisms some species of which are difficult toidentify precisely without experience) and the other setincluded those with a local geographical expertise andthese were able to rule on the likelihood of a particularspecies being found in a particular part of the country. Ata later date, from Autumn 2001, when draft maps of allthe submitted records were produced, these too werecritically examined in the same way, the basic rule of playbeing essentially “if in doubt, throw it out” (even if thisresulted in a species being under-recorded). At the end ofthe day one has to appreciate however that, although everyeffort has been made to verify records, and we have beenextremely diligent in rooting out inaccuracies, only a verysmall proportion of the submitted records are supportedby herbarium specimens. In the absence of such physicalguarantees one is left making a judgement on the recorders(in whom the scheme was ultimately dependent and towhom the Society is extremely grateful) and in trusting thedecisions made.

During the course of the scheme more than 300 personswere registered as recorders (Table 1). Even so, the finalposition undoubtedly reflects two issues: the small number

When the British Phycological Society was inaugurated,50 years ago, in July 1952, its aims included producing arevised check-list of British marine algae and thepublication of a new British marine algal flora. But it alsoinitiated an algal mapping scheme, which has now cometo fruition in this Check-list and Atlas of the Seaweeds ofBritain and Ireland. This volume therefore represents thecumulative efforts of a large number of individuals,professional and amateur, who have contributed their timeand data to the project. It is particularly appropriate thatit is being published at the end of the British PhycologicalSociety’s Jubilee year, for without our redoubtablefounders, it would probably never have been initiated.When the Provisional Atlas appeared in 1986, the ChiefScientist of the Nature Conservancy Councilacknowledged the value of such an atlas for the NCC, withrespect to the designation of Sites of Special ScientificInterest, National Nature Reserves and Marine NatureReserves. With continuing pressure on the coastal marineenvironment, distributional information is as importanttoday as it was 15 years ago.

Over the life of the project, technology has changeddramatically. The advent of computers has revolutionisedthe production of maps in particular, but data entry stillrequires the human hand and eye, as well as qualitycontrol to ensure accuracy. At the same time, ourunderstanding of the marine algae has moved forward

with concomitant impact on classification andnomenclature. Taxonomic revisions have therefore had tobe assessed and incorporated where appropriate. Theextensive synonymy, prepared by Michael Guiry, bearswitness to this.

Throughout, the involvement of the Biological RecordsCentre at Monks Wood has been crucial, and the expertiseand hard work of Henry Arnold in particular, cannot beunderestimated. Gavin Hardy co-ordinated the transfer ofdata from individuals to the BRC, with the unenviable jobof chivvying and chasing, travelling, liaising and pesteringto see this atlas finally appear. As well as dealing with thepreparation of the Check-list and the publishingpracticalities, Michael Guiry also facilitated the inclusionof Irish records, so this is not simply a British Atlas, butone that truly encompasses the geographical region ofBritain and Ireland, entirely appropriate as the Societybecomes ever more international.

On behalf of the British Phycological Society, I would liketo express thanks to all those, present and past, who haveunselfishly contributed to this project, but in particular tomark our indebtedness to Gavin Hardy, Michael Guiryand Henry Arnold for completing the task.

Eileen J. CoxPresident, The British Phycological Society

General introductionPreface

ixviii

A CHECK-LIST AND ATLAS OF THE SEAWEEDS OF BRITAIN AND IRELAND INTRODUCTION

Adey, W.J. Ahmad, M.R. Archer, A. Austwick, P.K.C. Baker, I. Ballantine, D. Barilotti, D. Barker, D. Bartrop & Harvey Bartrop & Knight Bartrop & Powell Barwell, C. Batters, E.A.L. Beaumont, A.J. Bennet, T. Berryman, J. Berryman, M. Blackler, M.C.H. Blum, J.L.Boalch, G.T. Bonner, L. Boswarva, J. Boyd, W.D. Bray, A.M. Brazier, P.Breeze, V.G. Brennan, A.T. Briggs, R.J. Bristol University Brodie, J.L. Buchan, S. Burkill, H.M. Burrows, E.M. Burrows, E.M. & Hiller, H.G. Burrows, R. Bursa, A. & Irvine Bursa, Adam Butler, T.M. Caldwell, H. Cartlidge, D. Castle, J.F. Chamberlain, Y.M. Chapman, A.R.O. Chapman, C.J. Chapman, V.J. Christensen, T. Clarke, G. Clayton, M.N. Clokie, J.P. Coastal Surveillance Unit Coles, S.M. Coll, J. Connolly, N. Conran, O.F. Conway, E.

Cooke, P.J. Coppins, B.J. Costello, J. Cotton, A.D. Cotton, J.H. Cremona, J. Cullinane, J.P. Davey, A. Davies, J. Davies, P.H. Davis, J. Davis, P. De Valéra, M. Dillenius Dinneen, P. Dipper, F. Dixon, P.S. Doeg, C. Drew, K.M. Dunn, M.D. Earll, R. Edwards, A.J. Egan, B. Ellis, K. Emblow, C.S. Evans, A. Exeter University NPS Exmoor Survey Group Farnham, W.F. Fletcher, D. Fletcher, R.L. Fletcher, W. Fooks, W.F. Fowler, C. Fowler, S.L. Fraser, R.S. Freamhainn, M. Freethy, R. Galbraith Krinos, M.H. Garbary, D. J. Gardiner, D. Garrad, L.S. Gee, J. George, D. Gilbert, O.L. Gilham, M.E. Gillham, M. Green, C.T. Green, J.C. Greenpeace Greville Guerin, J. Guiry, M.D. Guiterman, J.D. Gulson, Mrs

Gunning et al. Hainsworth, S. Hammond, F. & Hammond, N. Hammond, N. Hardy, F.G. Harvey, L.A. Harvey, Mrs Harvey, R. Harvey, R. & Holme, N. Harvey, W.H. Harvey-Gibson, R.F. Hayward, J. Healy, J. Hearn, Joan Hedley Brown Henderson, D.M. Hendey, N.I. Hepton, C.G.L. Heythorn, J. Hiller, H.G. Hyndman, G.C. Hinton Clipton Hiscock, K. Hiscock, S. Holme, N.A. Holmes, E.M. Hood, W. Hooper, R. Hornby, T.C. Horton et al. Howie, C.A. Howlett, R.M. Howson, C.M. Hruby, T. Intertidal Survey Unit Irvine, D. & Irvine, L. Irvine, D.E.G. Irvine, F.R. Irvine, L.M. Irvine, R. Jack, J. J.M. James, J.G. James, P.W. James, W. Jephson, J. Jephson, M. Jephson, N.A. Jermy, A.C. John, D.M. Johnston, C.S. Jones & Williams Jones, E. Jones, J.E.L. Jones, W.E.

Table 1The recorders

of keen amateur naturalists recording algae (phycologydoes not have a very large following of expert amateurssuch as those who study flowering plants, butterflies orbirds), and the paucity of full-time professionalphycologists (so that some critical groups are in the handsof only one or two talented individuals from whom itwould be impractical to expect complete coverage of thewhole of the British and Irish coastlines). This means thatsome species are under-recorded – their apparent raritybeing a reflection of the lack of professional or amateurexpertise rather than signifying the lack of the plant on theshore – and this, of course, means that there are inherentdifficulties in interpreting the data on some maps. At oneextreme, very easily recognisable species such as Fucusvesiculosus, for example, are probably very well-recorded: aspecies such as that would be regarded as rare if there weredots on a map for only a few 10-km squares; at the otherextreme, a microscopic, filamentous, endophytic species isalmost certain to be under-recorded as it would bephysically impossible to search every host plant (even if asuitable expert was available to do so on a full-time basis).As a result a map for such a species may have very fewrecords: is this under-recording, or is it, actually, a fairlyaccurate representation of the status of the species? Onewould incline to the former interpretation, but a definitiveconclusion is obviously not possible. For a few species, norecords have been submitted (Table 2). Otherwise allrecords have been included as maps even though somehave only a single record.

It is hoped that the publication of this Atlas will inspire thepresent and future generations of phycologists to goout onto the shore to fill gaps. At the same time, thespread of non-native species, such as Sargassum muticumand Undaria pinnatifida can be studied further(mercifully, British and Irish waters are too cold forthe almost impossibly invasive species Caulerpa taxifolia,which is wreaking such havoc in the Mediterraneanand has been introduced recently into New South Walesand California).

Although the British Phycological Society was notfounded until 1952, and the Marine Algal MappingScheme was launched in 1970, records submitted to thescheme and stored in the database go back as far as the lastquarter of the eighteenth century and it is hoped that,with the passage of time, an ever-increasing number ofhistorical records can be added so that anyone concerned

with changes in algal distribution will have acomprehensive point of reference. The number of recordssubmitted for each year is, however, very significantlyhigher from the early 1950s onwards (coincident with thefounding of the Society) and for this reason the mapspresented in this atlas depict records on a pre-1950 (opencircle) and 1950-to date (filled circle) basis.

AcknowledgementsWe are very grateful to: those who submitted records –some sadly no longer with us – and those who acted asreferees for records, all of which are listed in Table 1; thosewho wrote the legends for the maps, and who cheerfullyput up with our impossible demands and deadlines, viz, J.Brodie (Bangiophycidae and some Chlorophyceae), Y.M.Chamberlain (Corallinales), W.F. Farnham (someFlorideophycidae), R.L. Fletcher (Phaeophyceae), C.A.Maggs (Ceramiales, Cladophora and Enteromorpha), R.Merritt (Xanthophyceae) and M. Wilkinson (part of theChlorophyceae); and the late T. Christensen and P.J.G.Polderman for Vaucheria advice and records. The mapswere produced using Alan Morton’s DMAP software(http://www.dmap.co.uk). We are particularly indebted toTrevor Norton, who was responsible for the MappingScheme from its inception; he also provided cheerfulencouragement and generous support in times of woe tothe authors. Large amounts of data were submitted by:Royal Botanic Garden, Edinburgh (Bill and EileenMarshall helped enormously with inputting post-1950data); the Phycological Herbarium, National University ofIreland, Galway (GALW), entered by Fionnuala NíChualáin and Róisín Ní Raighne; the Joint NatureConservation Committee’s Marine Nature ConservationReview surveys and database (particularly SteveWilkinson); data from the BioMar surveys of Ireland (M.J.Costello, B. Picton C. Emblow, E. Sides, C. Morrow andothers); the Northern Ireland Sublittoral Survey (B.Picton, D.W. Connor, C.M. Howson and others); theNorthern Ireland Littoral Survey (M. Wilkinson andothers from Heriot-Watt University); Chris Preston andthe staff of the Biological Records Centre, Centre forEcology & Hydrology, Monks Wood were very helpfulthroughout the long gestation period. Fabio Rindi kindlychecked the proofs.

Michael Guiry and Gavin Hardy13 November 2002

1x

A CHECK-LIST AND ATLAS OF THE SEAWEEDS OF BRITAIN AND IRELAND CHECK-LIST

Jones, W.S. Jukes Coll. Kain, J.M. Kay, Q.O.N. Kerslake, Joy Kitching, J.A. Knight & Harvey Knight & Powell Knight, S. & S.J.T. Knott, C. Kozicki, K. Kraan, S. Krinris, M.G. Laing, I. Lambe, E. Lamplugh & Petts Lauret, M. Lawson, G. Lea, T.S. Leadbeater, B.S.C.Lewis & Powell Lewis, A.A. Lewis, I.D. Lewis, J.R. Little, A.E. Little, A.G. Lobban, C. Lodge, S. Lumb, C. MacKinnon, V. Machin, J. Macpherson Macpherson, G. Macpherson, W. Maggs, C. Mahony, J.A. Marine Nature Conservation Review Marshall, W. McAllister, H.A. McConnel, B. McCrea, M.M. McGee, J.A. McGrath, D. McGuighan McLachlan, J. Merrifield, M.P. Merritt, R.

Mitchell, R. Moestrup, G. Moestrup, P. Mooney, E. Morris, J.E.G. Morrish, M. Morrow, C.C. Morton, O. Moss, B.L.Moyse & Nelson-Smith Muirhead, C.W. Murdoch, J.M. Murphy, P. Nature Conservancy Nelson-Smith Newroth, P.R. Newton, L. Newton, S.A. Nicholson, R.M. Nielsen, R. Nordstedt, O. Norton, T.A. Nugent, C. Nunn, J. Ó Céidigh, P.O’Connor, B. O’Connor, M. Ottway, B. Parkes, M.W. Parkes, H.M. Pedersen, P.M. Perring, F.H. Perry, S. Pickervance, E. Picton, B. Pizzey, J.M. Pocock, M. Polderman, P.J.G. Poole, J.M. Powell, H.T. Price, J.H. Pybus, C. Ralfs, J. Rees, T.K. Reith, A. Riding, R. Roberts, M.

Roden, C. Ross, R. Russell, G. Saunders, J. Sawers, W. Scannell, M.J.P. Scott, G.M. Scott, W. Scottish Natural Heritage Sides, E.M. Sinclair, J. Smith, R.M. Smith, S.M. Spence, D.H.N. Spencer, D. Stroud, D.A. Sublittoral Survey Taylor, A.R.A. Taylor, R. Tesseman, B. Thompson, T.E. Tittley, I. Tomlinson, R. Traill, G.W. Tucker, D. Turk & Brewster Turk, F.A. & S.M. Turk, S.M. & Price, J.H. Turnbull, L.P. Tuson, M. Wallace, A. Wallace, I.D. Wallace, M. Wallace, N. Walton, C.L. Watling et al. Watling, R. Webster, A.M. Whelan, P. Wilkinson & Roberts Wilkinson, M. Williams, F. Wilson, K. Woollard, J. Wynne, M.J.

Table 2Species for which no records have been obtained.

Acrochaetium lorrain-smithiaeAcrosiphonia sonderiAglaothamnion diaphanum Aglaothamnion feldmanniae Blidingia chadefaudii Bonnemaisonia clavataChloroccum submarinum

Cladophora globulina Cladophora lehmannianaEntocladia leptochaeteMyrionema magnusiiProtomonostroma undulatumPseudendoclonium marinum Scinaia complanata

Stichococcus bacillaris Stictyosiphon adriaticus Streblonema helophorum Streblonema intestinum Stylonema cornu-cervi Wittrockiella paradoxa

Check-list

32


RHODOPHYTARHODOPHYCEAE

BANGIOPHYCIDAEPORPHYRIDIALES

PHRAGMONEMATACEAE

NEEVEA Batters 1900

repens Batters

PORPHYRIDIACEAE

PORPHYRIDIUM Nägeli 1849

purpureum (Bory de Saint-Vincent) K. Drew & Ross

RHODELLA L. Evans 1970

maculata L. Evans

GONIOTRICHALES

GONIOTRICHACEAE

CHROODACTYLON Hansgirg 1885

ornatum (C. Agardh) Basson

[Asterocytis ramosa (Thwaites) Gobi ex F. Schmitz]

COLACODICTYON Feldmann 1955

reticulatum (Batters) Feldmann

[Colaconema reticulatum Batters]

STYLONEMA Reinsch 1875

alsidii (Zanardini) K. Drew

[Goniotrichum alsidii (Zanardini) M.A. Howe]

[Goniotrichum elegans (Chauvin) Zanardini]

cornu-cervi Reinsch

[Goniotrichum cornu-cervi (Reinsch) Hauck]

ERYTHROPELTIDALES

ERYTHROTRICHIACEAE

ERYTHROCLADIA Rosenvinge 1909

irregularis Rosenvinge

ERYTHROPELTIS F. Schmitz 1896

discigera (Berthold) F. Schmitz

Note: Included on the authority of Brodie & Irvine (2003), who recognise E. discigera var. flustrae

Batters, but who note that Erythropeltis discigera var. discigera may be part of the life history of a

Porphyrostromium.

ERYTHROTRICHIA J.E. Areschoug 1850

bertholdii Batters

Note: Recognized as a separate entity by Brodie & Irvine (2003); included in synonymy by others.

carnea (Dillwyn) J. Agardh

investiens (Zanardini) Bornet

This is a taxonomic listing of the red, brown and green

marine benthic macroalgae of Britain and Ireland generally

known as seaweeds. Not all of the species listed here are

represented as maps as there were no field records

submitted (see Table 2, page x). The reader is generally

spared the repetitive mantra that taxonomic revisions are

necessary, as this is probably true for virtually all the

included entities; the futility of algal taxonomy is perhaps

best allegorised by the Grimm Brothers fairytale task of

emptying a lake using a spoon with a hole. Much of this

information is, in any case, included in the series “Seaweeds

of the British Isles” (Dixon & Irvine, 1977; Irvine, 1983;

Fletcher, 1987; Christensen, 1987; Burrows, 1991; Maggs

& Hommersand, 1993; Irvine & Chamberlain, 1994;

Brodie & Irvine, 2003). The present list follows the format

established by Parke & Dixon for the Check-list of British

Marine Algae, the ultimate version of which was published

in 1976 (Parke & Dixon, 1976). A departure from this

format in the present treatment is that notes are included

directly in the text. Generally, only changes made since the

listing in “The Species Directory of the Marine Fauna and

Flora of the British Isles and Surrounding Seas” (Guiry,

1997) have been annotated.

The taxonomic arrangement in general follows that of

Silva, Basson & Moe (1996) for the green and red algae.

We have chosen to adopt the arrangement of brown algal

families in orders as suggested by De Reviers & Rousseau

(1999), Rousseau & De Reviers (1999) and Rousseau et al.

(2001). The extraordinary range of forms in some orders

and families in this scheme has been remarked upon.

Orders are generally arranged phylogenetically, as this is

mostly familiar to the reader; families, genera and species

are arranged alphabetically. An innovation in the present

list is the inclusion of subfamily and tribe names where

widely used or useful (mainly within the Corallinaceae,

Ceramiales and Dictyotales). Nomenclatural authorship is

included in full, partly because of a lack of consistency in

the use of abbreviations, but also to assist in tracing names.

Should authors wish to use standardized abbreviations, the

list of Brummitt & Powell (1992) is recommended,

although this has been only rarely used by phycologists

(e.g., Wynne, 2001). “Nom. illeg.” refers to a

nomenclaturally illegitimate name; “auct.” refers to an

opinion of authors as to synonymy that may not be in

accordance with the nomenclatural type. In agreement

with Article 46, Note 1 of the International Code of

Botanical Nomenclature (Greuter et al., 2000: 72), and as

adopted by Silva, Basson & Moe (1996), the use of “in” as

part of the authorship of a name has been discontinued.

Synonyms given (in square brackets) are mostly those

in common use in the last 150 years, but specifically

refer to names used by Batters (1902), Newton (1931),

Parke & Dixon (1976), and in the series “Seaweeds of the

British Isles”.

AcknowledgementsHenry Arnold, Juliet Brodie, Yvonne Chamberlain,

Linda Irvine, David John, Bill Farnham, Bob Fletcher,

Max Hommersand, Christine Maggs, Osborne Morton,

Akira Peters, Charley O’Kelly, Fabio Rindi, and Mike

Wynne made valuable and insightful comments on the list,

some of which we have chosen not to incorporate for

reasons of brevity or consistency.

Introduction

54


Note: Placed in synonymy with Erythrotrichia carnea by Heerebout (1968: 151). However, Silva,

Basson & Moe (1996: 89), while agreeing with Heerebout (loc. cit.) that too many species have been

recognised amongst these morphologically variable algae, tentatively treated it separately.

reflexa (P.L. Crouan & H.M. Crouan) Thuret ex De Toni

Note: See Erythrotrichia investiens above.

welwitschii (Ruprecht) Batters

PORPHYROPSIS Rosenvinge 1909

coccinea (J. Agardh ex J.E. Areschoug) Rosenvinge

[Porphyra coccinea J. Agardh ex J.E. Areschoug]

PORPHYROSTROMIUM Trevisan 1848

boryanum (Montagne) P. Silva

[Erythrotrichia boryana (Montagne) Berthold]

[Erythrotrichopeltis boryana (Montagne) Kornmann]

ciliare (Carmichael) M.J. Wynne

[Erythrotrichia ciliaris (Carmichael) Thuret]

[Erythrotrichopeltis ciliaris (Carmichael) Kornmann]

SAHLINGIA Kornmann 1989

subintegra (Rosenvinge) Kornmann

[Erythrocladia subintegra Rosenvinge]

[Erythropeltis subintegra (Rosenvinge) Kornmann & Sahling]

BANGIALES

BANGIACEAE

BANGIA Lyngbye 1819

atropurpurea (Roth) C. Agardh

[Bangia fuscopurpurea (Dillwyn) Lyngbye]

PORPHYRA C. Agardh 1824

Note: Specimens reported under the names Porphyra laciniata and P. purpurea could be P. dioica, P.

purpurea or another species of the genus. Herbarium material is often difficult to ascribe (Brodie &

Irvine, 2003).

amplissima (Kjellman) Setchell & Hus ex Hus

Note: Includes all material previously identified as Porphyra miniata from the area (Brodie & Irvine,

2003).

dioica J. Brodie & L.M. Irvine

Note: Not included in Guiry (1997); see Brodie & Irvine (1997).

drachii J. Feldmann

Note: See Brodie & Irvine (2003).

leucosticta Thuret

linearis Greville

purpurea (Roth) C. Agardh

[Porphyra amethystea Kützing]

Note: Porphyra amethystea was based on material collected by Shuttleworth from Renvyle, Co. Galway,

Ireland. The type is representative of P. purpurea (Brodie & Irvine, 2003).

umbilicalis (Linnaeus) Kützing

FLORIDEOPHYCIDAEACROCHAETIALES

Note: Harper & Saunders (2002), on the basis of DNA sequencing, have proposed the

reinstatement of Colaconema for acrochaetiaceous algae with one or more chloroplasts (with or

without pyrenoids), of varying shape but never stellate. The authors referred a number of species to

the monotypic Colaconemataceae and to the new order Colaconematales. Further species of

Colaconema are undoubtedly included in the family Acrochaetiaceae but additional study is

required.

ACROCHAETIACEAE

ACROCHAETIUM Nägeli 1858

Note: The species of Acrochaetium listed here were included by Guiry (1997) under the name

Audouinella. Audouinella densa, A. humilis, A. irregularis, A. lanuginosa, A. leptonema, A. polyblasta,

and A. pulvera, were erroneously listed from the area in Guiry (1997); it was intended that these

should be listed as being recorded from the north of France but the critical information was

inadvertently omitted from the final publication. Nevertheless, it is possible that these entities do

occur in the area.

alariae Jónsson Bornet

[Chantransia alariae Jónsson]

[Audouinella alariae (Jónsson) Woelkerling]

battersianum G. Hamel

[Audouinella battersiana (Hamel) P.S. Dixon]

brebneri (Batters) G. Hamel

[Rhodochorton brebneri Batters]

[Audouinella brebneri (Batters) P.S. Dixon]

chylocladiae (Batters) Batters

[Audouinella chylocladiae (Batters) P.S. Dixon]

corymbiferum (Thuret) Batters

[Audouinella corymbifera (Thuret) P.S. Dixon]

efflorescens (J. Agardh) Nägeli

[Audouinella efflorescens (J. Agardh) Papenfuss]

endozoicum (Darbishire) Batters

[Chantransia endozoica Darbishire]

[Audouinella endozoica (Darbishire) P.S. Dixon]

infestans M.A. Howe & Hoyt

[Audouinella infestans (M.A. Howe & Hoyt) P.S. Dixon]

lorrain-smithiae (Lyle) Lily Newton

[Audouinella lorrain-smithiae (Lyle) P.S. Dixon]

microscopicum (Nägeli ex Kützing) Nägeli

[Audouinella microscopica (Nägeli ex Kützing) Woelkerling]

minimum F.S. Collins

[Audouinella minima (F.S. Collins) G.R. South]

[Audouinella emergens (Rosenvinge) P.S. Dixon]

[Acrochaetium mirablis (Suhr) Nägeli]

nemalii (De Notaris ex Dufour) Bornet

[Audouinella nemalii (De Notaris ex Dufour) P.S. Dixon

Note: Listed in Dixon & Irvine (1977) and Guiry (1997) as “nemalionis”. Records from the area

may refer to Acrochaetium corymbiferum (Dixon & Irvine, 1977: 105).

76


parvulum (Kylin) Hoyt

[Audouinella parvula (Kylin) P.S. Dixon]

rosulatum (Rosenvinge) Papenfuss

[Audouinella rosulata (Rosenvinge) P.S. Dixon]

sanctae-mariae (Darbishire) G. Hamel

[Audouinella sanctae-mariae (Darbishire) P.S. Dixon]

savianum (Meneghini) Nägeli

[Chantransia thuretii (Bornet) Kylin]

[Audouinella thuretii (Bornet) Woelkerling]

[Audouinella saviana (Meneghini) Woelkerling ]

scapae (Lyle) Papenfuss

[Audouinella scapae (Lyle) P.S. Dixon]

secundatum (Lyngbye) Nägeli

[Audouinella secundata (Lyngbye) Woelkerling]

seiriolanum (Gibson) Rosenvinge

[Rhodochorton seiriolanum Gibson]

[Audouinella seiriolana (Gibson) P.S. Dixon]

sparsum (Carmichael ex Harvey) Nägeli

[Audouinella sparsa (Harvey) P.S. Dixon]

trifilum (Buffham) Batters

[Chantransia trifila Buffham]

[Audouinella trifila (Buffham) P.S. Dixon]

virgatulum (Harvey) Bornet

[Audouinella rhipidandra (Rosenvinge) P.S. Dixon]

[Audouinella virgatula (Harvey) P.S. Dixon]

[Chantransia virgatula (Harvey) Thuret]

RHODOCHORTON Nägeli 1862

concrescens K. Drew

[Audouinella concrescens (K. Drew) P.S. Dixon]

Note: As Audouinella concrescens in Guiry (1997). Requires further taxonomic investigation and is likely

to be closely related to Meiodiscus spetsbergensis.

membranaceum (Magnus) Hauck

[Audouinella membranacea (Magnus) Papenfuss]

purpureum (Lightfoot) Rosenvinge

[Audouinella purpurea (Lightfoot) Woelkerling]

[Rhodochorton rothii (Turton) Nägeli]

[Rhodochorton parasiticum Batters]

Note: As Audouinella purpurea in Guiry (1997).

SCHMITZIELLA Bornet & Batters 1892

endophloea Bornet & Batters

Note: Requires further investigation of its taxonomic position.

COLACONEMATALES

COLACONEMATACEAE

COLACONEMA Batters 1896

asparagopsis Chemin

[Acrochaetium asparagopsis (Chemin) Papenfuss]

[Audouinella asparagopsis (Chemin) P.S. Dixon]

bonnemaisoniae Batters

[Acrochaetium bonnemaisoniae (Batters) Feldmann & G. Feldmann]

[Audouinella bonnemaisoniae (Batters) P.S. Dixon]

caespitosum (J. Agardh) Jackelman, Stegenga & J.J. Bolton

[Audouinella botryocarpa (Harvey) Woelkerling]

[Audouinella caespitosa (J. Agardh) P.S. Dixon]

[Acrochaetium caespitosum (J. Agardh) Nägeli

Note: Includes Audouinella botryocarpa as described by Guiry, Kee & Garbary (1987) and listed in

Guiry (1997), but the complex requires further study at the genus and species level. The combination

Colaconema caespitosum was first made by Jackelman, Stegenga & Bolton (1991: 303) and was

separately proposed by Harper & Saunders (2002: 473).

daviesii (Dillwyn) Stegenga

[Acrochaetium daviesii (Dillwyn) Nägeli]

[Audouinella daviesii (Dillwyn) Woelkerling]

[Chantransia daviesii (Dillwyn) Thuret]

endophyticum (Batters) J.T. Harper & G.W. Saunders

[Acrochaetium endophyticum Batters]

[Audouinella endophytica (Batters) P.S. Dixon]

PALMARIALES

PALMARIACEAE

PALMARIA Stackhouse 1801

palmata (Linnaeus) Kuntze

[Rhodymenia palmata (Linnaeus) Greville]

Note: Rhodymenia palmata var. sobolifera (M. Vahl) Harvey and R. palmata var. sarniensis (Roth)

Greville represent morphological variants that do not merit recognition at the variety or forma level

(Kraan & Guiry, pers. comm.).

RHODOPHYSEMATACEAE

HALOSACCIOCOLAX S. Lund 1959

kjellmanii S. Lund

MEIODISCUS Saunders & McLachlan 1991

spetsbergensis (Kjellman) Saunders & McLachlan

[Audouinella spetsbergensis (Kjellman) Woelkerling]

RHODOPHYSEMA Batters 1900

elegans (P.L. Crouan & H.M. Crouan ex J. Agardh) P.S. Dixon

[Rhododermis elegans P.L. Crouan & H.M. Crouan ex J. Agardh]

[Rhododermis elegans f. polystromatica Batters]

[Rhododermis polystromatica (Batters) Batters]

[Rhodophysema elegans var. polystromaticum (Batters) P.S. Dixon]

[Peyssonnelia rupestris P.L. Crouan & H.M. Crouan]

[Rhododermis parasitica Batters]

feldmannii Cabioch

Note: Inadvertently omitted from Guiry (1997).

georgei Batters

[Rhododermis georgei (Batters) F.S. Collins]

98


RHODOTHAMNIELLACEAE

RHODOTHAMNIELLA Feldmann 1978

floridula (Dillwyn) Feldmann

[Audouinella floridula (Dillwyn) Woelkerling]

[Rhodochorton floridulum (Dillwyn) Nägeli]

AHNFELTIALES

AHNFELTIACEAE

AHNFELTIA Fries 1836

plicata (Hudson) Fries

[Sterrocolax decipiens F. Schmitz]

[Porphyrodiscus simulans Batters]

NEMALIALES

GALAXAURACEAE

SCINAIA Bivona-Bernardi 1822

complanata (F.S. Collins) A.D. Cotton

Note: Occurrence requires further investigation (see Maggs & Guiry, 1982a).

furcellata (Turner) J. Agardh

[Scinaia trigona (Clemente) Trevisan]

[Scinaia forcellata Bivona-Bernardi]

interrupta (A.P. De Candolle) M.J. Wynne

[Scinaia turgida Chemin]

Note: Erroneously listed as Scinaia trigona (a synonym of S. furcellata) in Guiry (1997).

Formerly Scinaia turgida Chemin. However, many records from Britain and Ireland of S.

furcellata, particularly in the north-west of Ireland and western Scotland, may refer to this

species and need individual checking.

LIAGORACEAE

HELMINTHOCLADIA J. Agardh 1851

calvadosii (J.V. Lamouroux ex Duby) Setchell

[Helminthocladia purpurea (Harvey) J. Agardh]

HELMINTHORA J. Agardh 1851

divaricata (C. Agardh) J. Agardh

NEMALION Duby 1830

helminthoides (Velley) Batters

[Nemalion multifidum (F. Weber & D. Mohr) Endlicher]

Note: Further studies are required of the relationship between Nemalion helminthoides and N.

multifidum.

GELIDIALES

GELIDIACEAE

GELIDIELLA Feldmann & G. Hamel 1934

calcicola Maggs & Guiry

GELIDIUM J.V. Lamouroux 1813

corneum (Hudson) J.V. Lamouroux

[Gelidium sesquipedale (Clemente) Thuret]

Note: Listed as Gelidium sesquipedale in Guiry (1997); see Silva, Basson & Moe (1996: 136) who argue

that proposals to reject the name Gelidium corneum as ambiguous (e.g., Dixon, 1967: 60-61) are not

justified.

crinale (Turner) Gaillon

maggsiae Rico & Guiry

Note: See Rico & Guiry (1997); currently known only from the type locality in Co. Galway.

pulchellum (Turner) Kützing

pusillum (Stackhouse) Le Jolis

spinosum (S.G. Gmelin) P.C. Silva

[Gelidium latifolium Bornet ex Hauck]

[Gelidium attenuatum (Turner) Thuret]

Note: Included as Gelidium latifolium in Guiry (1997); see Silva in Silva, Basson & Moe (1996: 141-

142). Further studies are needed to establish if Mediterranean and Atlantic populations are indeed

conspecific as inferred by Silva; if they are not, the Atlantic populations should continue to be treated

under the name Gelidium latifolium.

PTEROCLADIELLA Santelices & Hommersand 1997

capillacea (S.G. Gmelin) Santelices & Hommersand

[Pterocladia pinnata (Hudson) Papenfuss]

[Pterocladia capillacea (S.G. Gmelin) Bornet]

Note: Included as Pterocladia capillacea in Guiry (1997); see Santelices & Hommersand (1997).

GRACILARIALES

GRACILARIACEAE

GRACILARIA Greville 1830

bursa-pastoris (S.G. Gmelin) P.C. Silva

[Gracilaria compressa (C. Agardh) Greville]

gracilis (Stackhouse) Steentoft, L.M. Irvine & Farnham

[Gracilaria confervoides Greville, nom. illeg.]

[Gracilaria verrucosa (Hudson) Papenfuss]

multipartita (Clemente) Harvey

Note: This entity has passed under the name Gracilaria foliifera (Forsskål) Børgesen, an unrelated

species from the Indian Ocean (see Guiry & Freamhainn, 1985).

GRACILARIOPSIS E.Y. Dawson 1949

longissima (S.G. Gmelin) Steentoft, L.M. Irvine & Farnham

Note: Records of Gracilariopsis lemaneiformis (Bory de Saint-Vincent) E.Y. Dawson from the area

(Fredericq & Hommersand 1989) have been rejected by Steentoft et al. (1995) and the plants in

question referred to this species. See also Steentoft & Farnham (1997).

PTEROCLADIOPHILACEAE

HOLMSELLA Sturch 1926

pachyderma (Reinsch) Sturch

1110


BONNEMAISONIALES

BONNEMAISONIACEAE

ASPARAGOPSIS Montagne 1840

armata Harvey

[Falkenbergia rufolanosa (Harvey) F. Schmitz]

BONNEMAISONIA C. Agardh 1822

asparagoides (Woodward) C. Agardh

[Hymenoclonium serpens (P.L. Crouan & H.M. Crouan) Batters]

clavata G. Hamel

Note: Although Hamel (1930) in his original description of this entity mentions plants from the south

coast of England (see Dixon & Irvine, 1977), its specific status vis-à-vis Bonnemaisonia asparagoides

requires further study.

hamifera Hariot

[Trailliella intricata Batters]

NACCARIACEAE

ATRACTOPHORA P.L. Crouan & H.M. Crouan 1848

hypnoides P.L. Crouan & H.M. Crouan

[Rhododiscus pulcherrimus P.L. Crouan & H.M. Crouan]

Note: See Maggs, Guiry & Irvine (1983) regarding the life history of Rhododiscus pulcherrimus.

NACCARIA Endlicher 1836

wiggii (Turner) Endlicher

CRYPTONEMIALES

HALYMENIACEAE

CRYPTONEMIA J. Agardh 1842

hibernica Guiry & L.M. Irvine

seminervis (C. Agardh) J. Agardh

DERMOCORYNUS P.L. Crouan & H.M. Crouan 1858

montagnei P.L. Crouan & H.M. Crouan

GRATELOUPIA C. Agardh 1822

dichotoma J. Agardh

filicina (J.V. Lamouroux) C. Agardh

[Grateloupia minima P.L. Crouan & H.M. Crouan]

Note: The variety Grateloupia filicina var. luxurians A. Gepp & E.S. Gepp, originally described from

Australia, occurs mainly on the south coast of England and is likely to be adventive (Farnham, 1980:

892-895).

turuturu Yamada

Note: According to Gavio & Fredericq (2002) this is the correct name for an introduced entity,

probably from the western Pacific, named as Grateloupia doryophora (Montagne) M.A. Howe in north-

western Europe.

HALYMENIA C. Agardh 1817

latifolia P.L. Crouan & H.M. Crouan ex Kützing

HILDENBRANDIALES

HILDENBRANDIACEAE

HILDENBRANDIA Nardo 1834

crouaniorum J. Agardh

Note: Formerly “crouanii”. With respect to the spelling of the epithet, see note under Phycocelis

crouaniorum.

rubra (Sommerfelt) Meneghini

[Hildenbrandia prototypus Nardo]

CORALLINALES

CORALLINACEAE

AUSTROLITHOIDEAE

BOREOLITHON A.S. Harvey & Woelkerling 1995

van-heurckii (Heydrich) A.S. Harvey & Woelkerling

[Melobesia van-heurckii (Heydrich) De Toni]

CHOREONEMATOIDEAE

CHOREONEMA F. Schmitz 1889

thuretii (Bornet) F. Schmitz

CORALLINOIDEAE

CORALLINEAE

CORALLINA Linnaeus 1758

elongata J. Ellis & Solander

[Corallina mediterranea J.E. Areschoug]

officinalis Linnaeus

JANIEAE

HALIPTILON (Decaisne) Lindley 1846

squamatum (Linnaeus) H.W. Johansen, L.M. Irvine & A. Webster

[Corallina squamata Linnaeus]

JANIA J.V. Lamouroux 1812

rubens (Linnaeus) J.V. Lamouroux

[Corallina rubens Linnaeus]

Note: Irvine & Johansen (1994: 56) recognise Jania rubens var. corniculata (Linnaeus) Yendo.

LITHOPHYLLOIDEAE

LITHOPHYLLUM Philippi 1837

Note: See Bailey (1999) regarding the phylogenetic position of Lithophyllum and Titanoderma; the

proposals of Woelkerling (1983), Campbell & Woelkerling (1990) and Woelkerling & Campbell

(1992) regarding the genera of the Lithophylloideae are not adopted here.

crouaniorum Foslie

Note: See Chamberlain & Irvine (1994: 67) with respect to misidentification of this entity and of

Lithophyllum orbiculatum Foslie. Records of Dermatolithon crouaniorum (Foslie) Hamel & Lemoine

(“crouanii”) from the area refer to Titanoderma laminariae (P.L. Crouan & H.M. Crouan) Y.M.

Chamberlain and not to the present species. For a comment on the spelling of the epithet, see note

under Phycocelis crouaniorum.

1312


dentatum (Kützing) Foslie

duckerae Woelkerling

Note: Included, incorrectly, in Woelkerling (1983), Chamberlain & Irvine (1994) and Guiry (1997) as

“duckeri”. Only known from apparently dead material from Cornwall (see Chamberlain & Irvine,

1994: 70-72) and may be extinct in the area.

fasciculatum (Lamarck) Foslie

[Melobesia fasciculata (Lamarck) Harvey]

[Lithothamnion fasciculatum (Lamarck) J.E. Areschoug]

hibernicum Foslie

Note: Requires further investigation (see Chamberlain & Irvine, 1994: 74-75); no specimens have been

found since the late 19th century.

incrustans Philippi

nitorum Adey & P.J. Adey

[Pseudolithophyllum nitorum (Adey & P.J. Adey) Mendoza & Cabioch]

orbiculatum (Foslie) Foslie

[Lithothamnion orbiculatum Foslie]

TITANODERMA Nägeli 1858

Note: Records of Dermatolithon crouaniorum (Foslie) Hamel & Lemoine (as “crouanii” ) from the area

are misidentifications of Titanoderma laminariae and do not refer to the type of Lithophyllum

crouaniorum Foslie (q.v.) (“crouanii”).

corallinae (P.L. Crouan & H.M. Crouan) Woelkerling, Y.M. Chamberlain & P.C. Silva

[Melobesia corallinae P.L. Crouan & H.M. Crouan]

[Dermatolithon corallinae (P.L. Crouan & H.M. Crouan) Foslie]

[Lithophyllum corallinae (P.L. Crouan & H.M. Crouan) Heydrich]

laminariae (P.L. Crouan & H.M. Crouan) Y.M. Chamberlain

[Dermatolithon laminariae (P.L. Crouan & H.M. Crouan) Foslie]

pustulatum (J.V. Lamouroux) Nägeli

[Dermatolithon pustulatum (J.V. Lamouroux) Foslie]

[Dermatolithon litorale (Suneson) G. Hamel & Lemoine]

[Dermatolithon hapalidioides (P.L. Crouan & H.M. Crouan) Foslie]

[Lithophyllum hapalidioides (P.L. Crouan & H.M. Crouan) Hariot]

[Tenarea confinis (P.L. Crouan & H.M. Crouan) Adey & P. Adey]

[Lithophyllum adplicitum (Foslie) Lily Newton]

Note: Chamberlain & Irvine (1994: 96-112) include three additional varieties: Titanoderma pustulatum

var. canellatum (Kützing) Y.M. Chamberlain, T. pustulatum var. confine (P.L. Crouan & H.M. Crouan)

Y.M. Chamberlain, and T. pustulatum var. macrocarpum (Rosanoff ) Y.M. Chamberlain.

MASTOPHOROIDEAE

HYDROLITHON (Foslie) Foslie 1909

boreale (Foslie) Y.M. Chamberlain

cruciatum (Bressan) Y.M. Chamberlain

farinosum (J.V. Lamouroux) D. Penrose & Y.M. Chamberlain

[Fosliella farinosa (J.V. Lamouroux) M.A. Howe]

[Melobesia farinosa J.V. Lamouroux]

samoënse (Foslie) Keats & Y.M. Chamberlain

Note: The use of a diaeresis is permitted by the ICBN where it is an aid to correct pronunciation.

sargassi (Foslie) Y.M. Chamberlain

[Pneophyllum sargassi (Foslie) Y.M. Chamberlain]

PNEOPHYLLUM Kützing 1843

confervicola (Kützing) Y.M. Chamberlain

[Fosliella minutula (Foslie) Ganesan]

coronatum (Rosanoff ) Penrose

[Pneophyllum caulerpae (Foslie) P.L. Jones & Woelkerling]

[Fosliella tenuis Adey & P.J. Adey]

Note: Chamberlain (1994a: 133) reported that the type of Hapalidium zonale P.L. Crouan & H.M.

Crouan (Brittany, France) did not have the pore filaments characteristic of this entity. Many records

from the area of Melobesia zonalis (P.L. Crouan & H.M. Crouan) Foslie and Fosliella zonalis (P.L.

Crouan & H.M. Crouan) Feldmann, actually represent Pneophyllum coronatum. As Pneophyllum

caulerpae in Chamberlain (1994b: 133) but later referred to P. coronatum by Penrose in Chamberlain

(1994a).

fragile Kützing

[Fosliella lejolisii (Rosanoff ) M.A. Howe]

[Pneophyllum lejolisii (Rosanoff ) Y.M. Chamberlain]

[Melobesia lejolisii Rosanoff ]

[Pneophyllum microsporum (Rosenvinge) Y.M. Chamberlain]

limitatum (Foslie) Y.M. Chamberlain

[Fosliella limitata (Foslie) Rueness]

lobescens Y.M. Chamberlain

[Pneophyllum plurivalidum Y.M. Chamberlain]

myriocarpum (P.L. Crouan & H.M. Crouan) Y.M. Chamberlain

[Pneophyllum concollum Y.M. Chamberlain]

MELOBESIOIDEAE

EXILICRUSTA Y.M. Chamberlain 1992

parva Y.M. Chamberlain

LEPTOPHYTUM Adey 1966

Note: Leptophytum was included in Phymatolithon by Düwel & Wegeberg (1996) but was subsequently

reinstated by Adey, Athanasiadis & Lebednik (2001).

bornetii (Foslie) Adey

elatum Y.M. Chamberlain

laeve (Foslie) Adey

[Lithothamnion laeve Foslie]

LITHOTHAMNION Heydrich 1897

corallioides (P.L. Crouan & H.M. Crouan) P.L. Crouan & H.M. Crouan

glaciale Kjellman

[Lithothamnion colliculosum Foslie]

[Lithothamnion granii (Foslie) Foslie]

lemoineae Adey

sonderi Hauck

MELOBESIA J.V. Lamouroux 1812

membranacea (Esper) J.V. Lamouroux

[Melobesia corticiformis Kützing]

[Epilithon membranaceum (Esper) Heydrich]

[Lithothamnion membranaceum (Esper) Foslie]

1514


MESOPHYLLUM Lemoine 1928

lichenoides (J. Ellis) M. Lemoine

[Lithothamnion lichenoides (J. Ellis) Foslie]

Note: Early records of an entity or entities referred to variously as Millepora agariciformis Pallas,

Lithothamnion agariciformis (Pallas) Foslie and Mesophyllum lichenoides f. agariciformis (Pallas) G.

Hamel & M. Lemoine from Roundstone, Co. Galway, Ireland may belong here (see Chamberlain &

Irvine 1994b: 206). See also Woelkerling (1998).

PHYMATOLITHON Foslie 1898

brunneum Y.M. Chamberlain

calcareum (Pallas) Adey & D.L. McKibbin

[Lithothamnion calcareum (Pallas) J.E. Areschoug]

[Phymatolithon polymorphum (Linnaeus) Foslie]

[Lithothamnion polymorphum (Linnaeus) J.E. Areschoug]

Note: See Phymatolithon purpureum, below, regarding records of Phymatolithon polymorphum.

laevigatum (Foslie) Foslie

[Lithothamnion laevigatum Foslie]

[Lithothamnion emboloides Heydrich]

lamii (M. Lemoine) Y.M. Chamberlain

[Lithophyllum lamii M. Lemoine]

[Lithophyllum melobesioides P.L. Crouan & H.M. Crouan ex M. Lemoine]

[Phymatolithon rugulosum Adey]

Note: Early records of Clathromorphum compactum (Kjellman) Foslie from Clew Bay, Co. Mayo,

Ireland refer to this species (Chamberlain & Irvine, 1994: 162, 224).

lenormandii (J.E. Areschoug) Adey

[Lithothamnion lenormandii (J.E. Areschoug) Foslie]

[Lithothamnion squamulosum Foslie]

purpureum (P.L. Crouan & H.M. Crouan) Woelkerling & L.M. Irvine

Note: This species has been reported as Phymatolithon polymorphum (Linnaeus) Foslie and

Lithothamnion polymorphum (Linnaeus) J.E. Areschoug, the type of which is a different entity,

Phymatolithon calcareum.

GIGARTINALES

ARESCHOUGIACEAE

SOLIERIA J. Agardh 1842

chordalis (C. Agardh) J. Agardh

Note: Reports of S. filiformis (Kützing) Gabrielson [see Farnham,1980, as Solieria tenera (J. Agardh)

M.J. Wynne & W.R. Taylor] are based on misidentifications of S. chordalis (Farnham, pers. comm.)

SARCODIOTHECA Kylin 1932

gaudichaudii (Montagne) Gabrielson

Note: See Farnham (1980) for reports from the area.

CALOSIPHONACEAE

CALOSIPHONIA P.L. Crouan & H.M. Crouan 1852

vermicularis (J. Agardh) F. Schmitz

SCHMITZIA Lagerheim ex P.C. Silva 1959

hiscockiana Maggs & Guiry

neapolitana (Berthold) Lagerheim ex P.C. Silva

CAULACANTHACEAE

CATENELLA Greville 1830

caespitosa (Withering) L.M. Irvine

[Catenella repens (Lightfoot) Batters]

[Catenella opuntia (Goodenough & Woodward) Greville, nom. illeg.]

CHOREOCOLACACEAE

CHOREOCOLAX Reinsch 1875

polysiphoniae Reinsch

HARVEYELLA F. Schmitz & Reinke 1889

mirabilis (Reinsch) F. Schmitz & Reinke

CRUORIACEAE

CRUORIA Fries 1835

cruoriaeformis (P.L. Crouan & H.M. Crouan) Denizot

pellita (Lyngbye) Fries

[Cruoria adhaerens P.L. Crouan & H.M. Crouan ex J. Agardh]

CYSTOCLONIACEAE

CALLIBLEPHARIS Kützing 1843

ciliata (Hudson) Kützing

jubata (Goodenough & Woodward) Kützing

[Calliblepharis lanceolata Batters]

CYSTOCLONIUM Kützing 1843

purpureum (Hudson) Batters

[Cystoclonium purpurascens (Hudson) Kützing]

RHODOPHYLLIS Kützing 1847

divaricata (Stackhouse) Papenfuss

[Rhodophyllis appendiculata J. Agardh]

[Rhodophyllis bifida Kützing]

Note: An undescribed species of Rhodophyllis occurs in deep water (25-40 m) in the area. This is

figured in Hiscock (1986: fig. 12, bottom left, “Rhodophyllis sp.”).

DUMONTIACEAE

DILSEA Stackhouse 1809

carnosa (Schmidel) Kuntze

[Dilsea edulis (Stackhouse) Stackhouse]

DUDRESNAYA P.L. Crouan & H.M. Crouan 1835

verticillata (Withering) Le Jolis

DUMONTIA J.V. Lamouroux 1813

contorta (S.G. Gmelin) Ruprecht

[Dumontia incrassata (O.F. Müller) J.V. Lamouroux]

[Dumontia filiformis (Hornemann) Greville]

PIKEA Harvey 1853

californica Harvey

Note: See Maggs & Ward (1996).

1716


FURCELLARIACEAE

FURCELLARIA J.V. Lamouroux 1813

lumbricalis (Hudson) J.V. Lamouroux

[Furcellaria fastigiata (Turner) J.V. Lamouroux]

HALARACHNION Kützing 1843

ligulatum (Woodward) Kützing

[Cruoria rosea (P.L. Crouan & H.M. Crouan) P.L. Crouan & H.M. Crouan]

GIGARTINACEAE

CHONDRACANTHUS Kützing 1843

acicularis (Roth) Fredericq

[Gigartina acicularis (Roth) J.V. Lamouroux]

teedei (Mertens ex Roth) Kützing

[Gigartina teedei (Mertens ex Roth) J.V. Lamouroux]

Note: The incorrect spelling “teedii” is frequently used for this entity.

CHONDRUS Stackhouse 1797

crispus Stackhouse

GIGARTINA Stackhouse 1809

pistillata (S.G. Gmelin) Stackhouse

GLOIOSIPHONIACEAE

GLOIOSIPHONIA Carmichael 1833

capillaris (Hudson) Carmichael

PLAGIOSPORA Kuckuck 1897

gracilis Kuckuck

[Cruoriopsis gracilis (Kuckuck) Batters]

HAEMESCHARIACEAE

HAEMESCHARIA Kjellman 1883

hennedyi (Harvey) K.L. Vinogradova & T. Yacovleva

[Petrocelis hennedyi (Harvey) Batters]

KALLYMENIACEAE

CALLOCOLAX F. Schmitz ex Batters 1895

neglectus F. Schmitz ex Batters

CALLOPHYLLIS Kützing 1843

cristata (C. Agardh) Kützing

[Euthora cristata (C. Agardh) J. Agardh

laciniata (Hudson) Kützing

[Callophyllis flabellata P.L. Crouan & H.M. Crouan]

Note: A further species of the genus, presently unascribed, may occur on the south coast of England

(W.F. Farnham, pers. comm.).

KALLYMENIA J. Agardh 1842

reniformis (Turner) J. Agardh

[Kallymenia larterae Holmes]

MEREDITHIA J. Agardh 1892

microphylla (J. Agardh) J. Agardh

[Kallymenia microphylla J. Agardh]

NEMASTOMATACEAE

ITONOA Masuda & Guiry 1995

marginifera (J. Agardh) Masuda & Guiry

[Platoma marginifera (J. Agardh) Batters]

NEMASTOMA J. Agardh 1842

canariense (Kützing) J. Agardh

Note: See Guiry (1997). Known in the area only from the subtidal of Lough Hyne, Co. Cork, Ireland,

from where fertile plants were collected recently but have not been examined fully yet.

TSENGIA K.C. Fan & Y.P. Fan 1962

bairdii (Farlow) K.C. Fan & Y.P. Fan

[Platoma bairdii (Farlow) Kuckuck]

PEYSSONNELIACEAE

PEYSSONNELIA Decaisne 1841

armorica (P.L. Crouan & H.M. Crouan) Weber-van Bosse

atropurpurea P.L. Crouan & H.M. Crouan

dubyi P.L. Crouan & H.M. Crouan

[Cruoriella dubyi (P.L. Crouan & H.M. Crouan) F. Schmitz]

harveyana P.L. Crouan & H.M. Crouan ex J. Agardh

immersa Maggs & L.M. Irvine

PHYLLOPHORACEAE

AHNFELTIOPSIS P.C. Silva & DeCew 1992

devoniensis (Greville) P.C. Silva & DeCew

[Fucus devoniensis Greville]

[Gymnogongrus devoniensis (Greville) Schotter]

CERATOCOLAX Rosenvinge 1898

hartzii Rosenvinge

COCCOTYLUS Kützing 1843

truncatus (Pallas) M.J. Wynne & J.N. Heine

[Phyllophora brodiei (Turner) Endlicher]

[Actinococcus subcutaneus (Lyngbye ex Hornemann) Rosenvinge]

[Phyllophora truncata (Pallas) A.D. Zinova]

Note: The epithet “brodiaei” is here corrected to “brodiei”; see note to Polysiphonia brodiei.

ERYTHRODERMIS Batters 1900

traillii (Holmes ex Batters) Guiry & Garbary

[Phyllophora traillii Holmes ex Batters]

[Erythrodermis allenii Batters]

GYMNOGONGRUS Martius 1833

crenulatus (Turner) J. Agardh

[Gymnogongrus norvegicus (Gunnerus) J. Agardh, auct.]

[Actinococcus peltaeformis F. Schmitz]

griffithsiae (Turner) Martius

[Actinococcus aggregatus F. Schmitz]

MASTOCARPUS Kützing 1843

stellatus (Stackhouse) Guiry

[Gigartina mamillosa (Goodenough & Woodward) J. Agardh]

[Gigartina stellata (Stackhouse) Batters]

[Petrocelis cruenta J. Agardh]

1918


PHYLLOPHORA Greville 1830

crispa (Hudson) P.S. Dixon

[Colacolepis incrustans F. Schmitz]

[Phyllophora rubens (Goodenough & Woodward) Greville]

[Phyllophora epiphylla (O.F. Müller) Batters]

pseudoceranoïdes (S.G. Gmelin) Newroth & A.R.A. Taylor

[Phyllophora membranifolia Endlicher]

Note: The use of a diaeresis is allowed by the ICBN where it is an aid to correct pronunciation.

sicula (Kützing) Guiry & L.M. Irvine

[Phyllophora palmettoïdes J. Agardh]

SCHOTTERA Guiry & Hollenberg 1975

nicaeënsis (J.V. Lamouroux ex Duby) Guiry & Hollenberg

Note: The use of a diaeresis is permitted by the ICBN where it is an aid to correct pronunciation

(“nicae’ensis”).

STENOGRAMME Harvey 1840

interrupta (C. Agardh) Montagne ex Harvey

POLYIDACEAE

POLYIDES C. Agardh 1822

rotundus (Hudson) Greville

SCHIZYMENIACEAE

SCHIZYMENIA J. Agardh 1851

dubyi (Chauvin ex Duby) J. Agardh

[Haematocelis rubens J. Agardh]

SPHAEROCOCCACEAE

SPHAEROCOCCUS Stackhouse 1797

coronopifolius Stackhouse

[Haematocelis fissurata P.L. Crouan & H.M. Crouan]

Note: See Maggs & Guiry (1982c) regarding the life history of Haematocelis fissurata.

PLOCAMIALES

PLOCAMIACEAE

PLOCAMIUM J.V. Lamouroux 1813

cartilagineum (Linnaeus) P.S. Dixon

[Fucus coccineus Hudson, nom. illeg.]

[Plocamium coccineum Lyngbye]

RHODYMENIALES

CHAMPIACEAE

CHAMPIA Desvaux 1809

parvula (C. Agardh) Harvey

CHYLOCLADIA Greville 1833

verticillata (Lightfoot) Bliding

[Chylocladia squarrosa (Kützing) Le Jolis]

[Chylocladia kaliformis (Goodenough & Woodward) Greville]

GASTROCLONIUM Kützing 1843

ovatum (Hudson) Papenfuss

[Chylocladia ovalis (Hudson) Greville]

[Chylocladia ovata (Hudson) Batters]

reflexum (Chauvin) Kützing

[Chylocladia reflexa (Chauvin) Zanardini]

LOMENTARIACEAE

LOMENTARIA Lyngbye 1819

articulata (Hudson) Lyngbye

clavellosa (Turner) Gaillon

orcadensis (Harvey) F.S. Collins ex W.R. Taylor

[Lomentaria rosea (Harvey) Thuret ex Farlow]

[Chrysymenia rosea Harvey]

RHODYMENIACEAE

CORDYLECLADIA J. Agardh 1852

erecta (Greville) J. Agardh

RHODYMENIA Greville 1830

ardissonei Feldmann

[Rhodymenia corallicola (Zanardini) Ardissone]

Note: Illustrated, as “Rhodymenia sp.”, by Maggs & Guiry (1982b) and as Rhodymenia pseudopalmata

by Hiscock (1986, fig. 19d, extreme right).

delicatula P.J.L. Dangeard

holmesii Ardissone

pseudopalmata (J.V. Lamouroux) P.C. Silva

[Rhodymenia palmetta (J.V. Lamouroux) Greville]

Note: Rhodymenia palmetta and R. pseudopalmata may not be the same species.

CERAMIALES

CERAMIACEAE

CALLITHAMNIOIDEAE

CALLITHAMNIEAE

AGLAOTHAMNION Feldmann-Mazoyer 1941

bipinnatum (P.L. Crouan & H.M. Crouan) Feldmann-Mazoyer

diaphanum L’Hardy-Halos & Maggs

feldmanniae Halos

[Callithamnion feldmanniae (Halos) G.R. South & I. Tittley]

gallicum (Nägeli) Halos ex Ardré

hookeri (Dillwyn) Maggs & Hommersand

[Callithamnion brodiei Harvey ]

[Callithamnion polyspermum C. Agardh]

[Callithamnion hookeri (Dillwyn) S.F. Gray]

[Callithamnion scopulorum C. Agardh]

priceanum Maggs, Guiry & Rueness

pseudobyssoides (P.L. Crouan & H.M. Crouan) Halos

2120


roseum (Roth) Maggs & L’Hardy-Halos

[Callithamnion roseum (Roth) Lyngbye]

sepositum (Gunnerus) Maggs & Hommersand

[Callithamnion sepositum (Gunnerus) P.S. Dixon & J.H. Price]

[Callithamnion arbuscula (Dillwyn) Lyngbye]

tenuissimum (Bonnemaison) Feldmann-Mazoyer

[Callithamnion byssoides Arnott ex Harvey]

[Callithamnion furcellariae J. Agardh]

[Callithamnion tenuissimum (Bonnemaison) Kützing]

[Aglaothamnion byssoides (Arnott ex Harvey) L’Hardy-Halos & Rueness]

[Aglaothamnion furcellariae (J. Agardh) Feldmann-Mazoyer]

tripinnatum (C. Agardh) Feldmann-Mazoyer

[Callithamnion tripinnatum C. Agardh]

CALLITHAMNION Lyngbye 1819

Note: Records from the area of Callithamnion dudresnayi (Bonnemaison) P.L. Crouan &

H.M. Crouan (e.g., Newton, 1931) require further study.

corymbosum (J.E. Smith) Lyngbye

granulatum (Ducluzeau) C. Agardh

[Callithamnion spongiosum Harvey]

tetragonum (Withering) S.F. Gray

[Callithamnion fruticulosum J. Agardh]

tetricum (Dillwyn) S.F. Gray

SEIROSPORA Harvey 1846

interrupta (J.E. Smith) F. Schmitz

[Seirospora seirosperma (Harvey) P.S. Dixon]

[Seirospora griffithsiana Harvey]

[Seirospora hormocarpa (Holmes) Batters]

PTILOTEAE

PLUMARIA F. Schmitz 1896

plumosa (Hudson) Kuntze

[Plumaria elegans (Bonnemaison) F. Schmitz]

PTILOTA C. Agardh 1817

gunneri P.C. Silva, Maggs & L.M. Irvine

[Ptilota plumosa (Linnaeus) C. Agardh, auct.]

CERAMIOIDEAE

ANTITHAMNIEAE

ANTITHAMNION Nägeli 1847

cruciatum (C. Agardh) Nägeli

densum (Suhr) M.A. Howe

villosum (Kützing) Athanasiadis

BORNETIEAE

BORNETIA Thuret 1855

secundiflora (J. Agardh) Thuret

CERAMIEAE

CERAMIUM Roth 1797

Note: Records of Ceramium arborescens J. Agardh, C. areschougii Kylin, C. derbesii Solier ex Kützing, C.

fruticulosum (Kützing) J. Agardh, C. pedicellatum (Duby) J. Agardh, nom. illeg., C. tenue J. Agardh, C.

vimeneum J. Agardh, mostly in Newton (1931), are excluded; see Maggs et al. (2002).

botryocarpum A.W. Griffiths ex Harvey

ciliatum (J. Ellis) Ducluzeau

cimbricum H.E. Petersen

[Ceramium fastigiatum Harvey, nom. illeg.]

circinatum (Kützing) J. Agardh

[Ceramium decurrens Harvey]

deslongchampsii Chauvin ex Duby

Note: As the species is named for the French paleontologist J.A. Eudes-Deslongchamps the specific

epithet should be corrected from “deslongchampii” to “deslongchampsii”.

[Ceramium strictum (Kützing) Rabenhorst, nom. illeg.]

diaphanum (Lightfoot) Roth

[Ceramium tenuissimum (Roth) J.E. Areschoug, nom. illeg.]

[Ceramium gracillimum (Kützing) Zanardini, nom. illeg.]

echionotum J. Agardh

flaccidum (Harvey ex Kützing) Ardissone

[Hormoceras flaccidum Kützing]

gaditanum (Clemente) Cremades

[Ceramium flabelligerum J. Agardh]

pallidum (Nägeli ex Kützing) Maggs & Hommersand

secundatum Lyngbye

shuttleworthianum (Kützing) Rabenhorst

[Acanthoceras shuttleworthianum Kützing]

[Ceramium acanthonotum (Carmichael ex Harvey) J. Agardh]

siliquosum (Kützing) Maggs & Hommersand

[Hormoceras siliquosum Kützing]

virgatum Roth

[Conferva nodulosa Lightfoot]

[Ceramium nodulosum (Lightfoot) Ducluzeau]

[Ceramium rubrum C. Agardh, auct.]

Note: As Ceramium nodulosum in Guiry (1997). See Maggs et al. (2002) for an account of the

confusion surrounding C. rubrum and C. nodulosa.

MICROCLADIA Greville 1830

glandulosa (Solander ex Turner) Greville

CROUANIEAE

CROUANIA J. Agardh 1842

attenuata (C. Agardh) J. Agardh

GRIFFITHSIEAE

ANOTRICHIUM Nägeli 1862

barbatum (C. Agardh) Nägeli

[Griffithsia barbata C. Agardh]

furcellatum (J. Agardh) Baldock

2322


GRIFFITHSIA C. Agardh 1817

corallinoides (Linnaeus) Trevisan

[Griffithsia corallina (Lightfoot) C. Agardh]

devoniensis Harvey

HALURUS Kützing 1843

equisetifolius (Lightfoot) Kützing

flosculosus (J. Ellis) Maggs & Hommersand

[Griffithsia flosculosa (J. Ellis) Batters]

[Griffithsia setacea (Hudson) C. Agardh]

HETEROTHAMNIEAE

ANTITHAMNIONELLA Lyle 1922

floccosa (O.F. Müller) Whittick

[Antithamnion floccosum (O.F. Müller) Kleen]

spirographidis (Schiffner) E.M. Wollaston

[Antithamnion spirographidis Schiffner]

ternifolia (J.D. Hooker & Harvey) Lyle

[Antithamnionella sarniensis Lyle]

PTEROTHAMNIEAE

PTEROTHAMNION Nägeli 1855

crispum (Ducluzeau) Nägeli

[Antithamnion crispum (Ducluzeau) Thuret ex Le Jolis]

plumula (J. Ellis) Nägeli

[Antithamnion plumula (J. Ellis) Thuret ex Le Jolis]

polyacanthum (Kützing) Nägeli

[Callithamnion polyacanthum Kützing]

Note: Not included in Guiry (1997); see Athanasiadis (1996a).

SCAGELIEAE

SCAGELIA Wollaston 1972

pylaisaei (Montagne) M.J. Wynne

Note: Known only from Rockall (Maggs & Hommersand, 1993), which is not within the area

mapped in the Atlas.

SCAGELOTHAMNIEAE

SCAGELOTHAMNION Athanasiadis 1996

pusillum (Ruprecht) Athanasiadis

[Scagelia pusilla (Ruprecht) Athanasiadis ex Maggs & Hommersand]

Note: As Scagelia “pusilla” in Guiry (1997).

SPHONDYLOTHAMNIEAE

SPHONDYLOTHAMNION Nägeli 1862

multifidum (Hudson) Nägeli

SPYRIDEAE

SPYRIDIA Harvey 1833

filamentosa (Wulfen) Harvey

COMPSOTHAMNIOIDEAE

COMPSOTHAMNIEAE

COMPSOTHAMNION (Nägeli) F. Schmitz 1889

decompositum (J. Agardh) Maggs & L’Hardy-Halos

[Callithamnion decompositum J. Agardh]

gracillimum De Toni

thuyoides (J.E. Smith) Nägeli

MONOSPOREAE

MONOSPORUS Solier 1845

pedicellatus (J.E. Smith) Solier

[Corynospora pedicellata (J.E. Smith) J. Agardh]

[Monospora pedicellata (J.E. Smith) J. Agardh]

SPERMOTHAMNIEAE

PTILOTHAMNION Thuret 1863

pluma (Dillwyn) Thuret

[Spermothamnion barbatum (C. Agardh) Nägeli]

[Ptilothamnion lucifugum A.D. Cotton]

[Spermothamnion mesocarpum (Carmichael) Chemin]

sphaericum (P.L. Crouan & H.M. Crouan ex J. Agardh) Maggs & Hommersand

SPERMOTHAMNION J.E. Areschoug 1847

Note: Reports from the area of Spermothamnion irregulare (J. Agardh) Ardissone refer to Ptilothamnion

sphaericum (Maggs & Hommersand, 1993: 139), above.

repens (Dillwyn) Rosenvinge

[Spermothamnion turneri (Mertens ex Roth) J.E. Areschoug]

strictum (C. Agardh) Ardissone

SPONGOCLONIEAE

PLEONOSPORIUM Nägeli 1862

borreri (J.E. Smith) Nägeli

DASYACEAE

DASYA C. Agardh 1824

corymbifera J. Agardh

hutchinsiae Harvey

[Dasya arbuscula Harvey]

ocellata (Grateloup) Harvey

punicea (Zanardini) Meneghini ex Zanardini

HETEROSIPHONIA Montagne 1842

plumosa (J. Ellis) Batters

[Heterosiphonia coccinea (Hudson) Falkenberg]

DELESSERIACEAE

DELESSERIOIDEAE

APOGLOSSEAE

APOGLOSSOCOLAX Maggs & Hommersand 1993

pusilla Maggs & Hommersand

2524


APOGLOSSUM J. Agardh 1898

ruscifolium (Turner) J. Agardh

[Delesseria ruscifolia (Turner) J.V. Lamouroux]

DELESSERIEAE

DELESSERIA J.V. Lamouroux 1813

sanguinea (Hudson) J.V. Lamouroux

MEMBRANOPTERA Stackhouse 1809

alata (Hudson) Stackhouse

[Delesseria alata (Hudson) J.V. Lamouroux]

Note: Maggs & Hommersand (1993: 199) and Athanasiadis (1996b: 114) include Pantoneura

angustissima in this species. Further investigation is, however, required of the name and the records

from the area.

HYPOGLOSSEAE

HYPOGLOSSUM Kützing 1843

hypoglossoides (Stackhouse) F.S. Collins & Hervey

[Hypoglossum woodwardii Kützing]

[Delesseria hypoglossum (Woodward) J.V. Lamouroux]

NITOPHYLLOIDEAE

NITOPHYLLEAE

NITOPHYLLUM Greville 1830

punctatum (Stackhouse) Greville

RADICILINGUA Papenfuss 1956

thysanorhizans (Holmes) Papenfuss

[Nitophyllum thysanorhizans Holmes]

[Rhizoglossum thysanorhizans (Holmes) Kylin]

PHYCODRYOIDEAE

CRYPTOPLEUREAE

ACROSORIUM Zanardini ex Kützing 1869

Note: Wynne (1989) regarded the entity known as Acrosorium reptans (P.L. Crouan & H.M. Crouan)

Kylin [Nitophyllum reptans P.L. Crouan & H.M. Crouan] as a prostrate form of Cryptopleura ramosa

(see also Maggs & Hommersand, 1993: 254-255); many literature records from the area refer, however,

to Acrosorium venulosum.

venulosum (Zanardini) Kylin

[Acrosorium uncinatum (Turner) Kylin]

CRYPTOPLEURA Kützing 1843

ramosa (Hudson) Kylin ex Lily Newton

[Nitophyllum laceratum (S.G. Gmelin) Greville]

GONIMOPHYLLUM Batters 1892

buffhamii Batters

MYRIOGRAMMEAE

HARALDIOPHYLLUM A.D. Zinova 1981

bonnemaisonii (Kylin) A.D. Zinova

[Myriogramme bonnemaisonii Kylin]

[Nitophyllum bonnemaisonii (Kylin) Kylin]

PHYCODRYEAE

ASTEROCOLAX Feldmann & G. Feldmann 1951

erythroglossi Feldmann & G. Feldmann

ERYTHROGLOSSUM J. Agardh 1898

Note: See Maggs & Hommersand (1993: 219) regarding the status of records of Erythroglossum

sandrianum (Kützing) Kylin from the area.

laciniatum (Lightfoot) Maggs & Hommersand

[Polyneura gmelinii (J.V. Lamouroux) Kylin]

PHYCODRYS Kützing 1843

rubens (Linnaeus) Batters

[Delesseria sinuosa (Goodenough & Woodward) J.V. Lamouroux]

POLYNEURA (J. Agardh) Kylin 1924

Note: Reports from the area of the entity known as Polyneura litterata are said to be based on

“misidentifications of other species”. No examination of the type in LD (from Torquay, Devon) seems

to have been undertaken.

bonnemaisonii (C. Agardh) Maggs & Hommersand

[Polyneura hilliae (Greville) Kylin]

SCHIZOSERIDEAE

DRACHIELLA J. Ernst & Feldmann 1957

heterocarpa (Chauvin ex Duby) Maggs & Hommersand

[Myriogramme heterocarpum (Chauvin ex Duby) J. Ernst & Feldmann]

[Myriogramme versicolor (Harvey) Kylin]

minuta (Kylin) Maggs & Hommersand

[Myriogramme minuta Kylin]

spectabilis J. Ernst & Feldmann

RHODOMELACEAE

BOERGESENIELLA Kylin 1956

fruticulosa (Wulfen) Kylin

[Polysiphonia fruticulosa (Wulfen) Sprengel]

[Pterosiphonia fruticulosa (Wulfen) L. Batten]

thuyoides (Harvey) Kylin

[Pterosiphonia thuyoides (Harvey) F. Schmitz]

BOSTRYCHIA Montagne 1842

scorpioides (Hudson) Montagne ex Kützing

BRONGNIARTELLA Bory de Saint-Vincent 1822

byssoides (Goodenough & Woodward) F. Schmitz

CHONDRIA C. Agardh 1817

capillaris (Hudson) M.J. Wynne

[Chondria tenuissima C. Agardh]

coerulescens (J. Agardh) Falkenberg

dasyphylla (Woodward) C. Agardh

HALOPITHYS Kützing 1843

incurva (Hudson) Batters

2726


LAURENCIA Nägeli 1862

obtusa (Hudson) J.V. Lamouroux

pyramidalis Bory de Saint-Vincent ex Kützing

[Laurencia obtusa var. pyramidata Bory de Saint-Vincent ex J. Agardh]

LOPHOSIPHONIA Falkenberg 1897

reptabunda (Suhr) Kylin

ODONTHALIA Lyngbye 1819

dentata (Linnaeus) Lyngbye

OSMUNDEA Stackhouse 1809

hybrida (A.P. De Candolle) K.W. Nam

[Laurencia hybrida (A.P. De Candolle) T. Lestiboudois]

[Laurencia caespitosa J.V. Lamouroux]

osmunda (S.G. Gmelin) K.W. Nam & Maggs

[Laurencia pinnatifida var. osmunda (Turner) Kützing]

[Laurencia osmunda (S.G. Gmelin) Maggs & Hommersand]

pinnatifida (Hudson) Stackhouse

[Laurencia pinnatifida (Hudson) J.V. Lamouroux]

ramosissima (Oeder) Athanasiadis

Note: Most specimens identified previously as Laurencia platycephala belong here (Nam et al., 2000).

truncata (Kützing) K.W. Nam & Maggs

[Laurencia truncata Kützing]

Note: Most specimens identified as this species belong to Osmundea ramosissima but some (such as

those listed as Laurencia platycephala by Maggs, Freamhainn & Guiry, 1983) may belong to a separate

entity for which the name Osmundea truncata may be available (see Nam et al., 2000).

POLYSIPHONIA Greville 1823

atlantica Kapraun & J.N. Norris

[Polysiphonia macrocarpa Harvey, nom. illeg.]

brodiei (Dillwyn) Sprengel

Note: Generally spelled “brodiaei”. As the species is named after James Brodie, the epithet is formed by

adding an “i” (see Silva, Basson, & Moe, 1996: 537).

ceramiaeformis P.L. Crouan & H.M. Crouan

denudata (Dillwyn) Greville ex Harvey

[Polysiphonia variegata (C. Agardh) Zanardini]

devoniensis Maggs & Hommersand

elongata (Hudson) Sprengel

elongella Harvey

fibrata (Dillwyn) Harvey

Note: Records (e.g., Newton, 1931) of P. rhunensis Thuret and P. sanguinea C. Agardh from the area

probably refer to this species (Maggs & Hommersand, 1993: 333).

fibrillosa (Dillwyn) Sprengel

[Polysiphonia richardsonii W.J. Hooker ex Harvey]

[Polysiphonia spinulosa Greville]

foetidissima Cocks ex Bornet

fucoides (Hudson) Greville

[Polysiphonia violacea (Roth) Sprengel]

[Polysiphonia nigrescens (Hudson) Greville ex Harvey]

furcellata (C. Agardh) Harvey

harveyi J. Bailey

[Polysiphonia insidiosa (J. Agardh) P.L. Crouan & H.M. Crouan, nom. illeg.]

lanosa (Linnaeus) Tandy

[Polysiphonia fastigiata (Roth) Greville]

nigra (Hudson) Batters

[Polysiphonia atrorubescens (Dillwyn) Greville]

opaca (C. Agardh) Moris & De Notaris

simulans Harvey

stricta (Dillwyn) Greville

[Polysiphonia urceolata (Lightfoot ex Dillwyn) Greville]

[Polysiphonia spiralis L. Batten]

subulifera (C. Agardh) Harvey

PTEROSIPHONIA Falkenberg 1897

ardreana Maggs & Hommersand

complanata (Clemente) Falkenberg

parasitica (Hudson) Falkenberg

pennata (C. Agardh) Sauvageau

[Polysiphonia pennata (C. Agardh) J. Agardh]

pinnulata (Kützing) Maggs & Hommersand

Note: probably introduced and presently confined to the Milford Haven area.

RHODOMELA C. Agardh 1822

confervoides (Hudson) P.C. Silva

[Rhodomela subfusca (Woodward) C. Agardh]

lycopodioides (Linnaeus) C. Agardh

CHLOROPHYTACHLOROPHYCEAECHLOROCOCCALES

CHARACIACEAE

CHARACIUM A. Braun 1849

marinum Kjellman

CHLOROCOCCACEAE

CHLOROCOCCUM Meneghini 1842

submarinum Alvik

SYKIDION E.P. Wright 1881

dyeri E.P. Wright

ENDOSPHAERACEAE

CHLOROCHYTRIUM Cohn 1872

cohnii E.P. Wright

[Chlorochytrium immersum Massee]

dermatocolax Reinke

facciolaae (Borzi) Bristol

GOMONTIA Bornet & Flahault 1888

polyrhiza (Lagerheim) Bornet & Flahault

[Gomontia manxiana Chodat]

2928


MICROSPORALES

MICROSPORACEAE

MICROSPORA Thuret 1850

ficulinae P.A. Dangeard

CHAETOPHORALES

CHAETOPHORACEAE

BOLBOCOLEON Pringsheim 1863

piliferum Pringsheim

ENTOCLADIA Reinke 1879

leptochaete (Huber) Burrows

[Endoderma leptochaete Huber]

PRINGSHEIMIELLA Höhnel 1920

scutata (Reinke) Höhnel ex Marchewianka

[Pringsheimia scutata Reinke]

PSEUDENDOCLONIUM Wille 1901

fucicola (Rosenvinge) R. Nielsen

[Ulvella fucicola Rosenvinge]

[Pseudopringsheimia fucicola (Rosenvinge) Wille]

Note: Included in Guiry (1997) as Pseudopringsheimia fucicola; see Nielsen (1980).

marinum (Reinke) Aleem & E. Schulz

[Protoderma marina Reinke]

Note: According to Burrows (1991: 125), this is synonymous with Pseudodendoclonium submarinum.

submarinum Wille

PSEUDOPRINGSHEIMIA Wille 1909

confluens (Rosenvinge) Wille

TELLAMIA Batters 1895

contorta Batters

[Tellamia intricata Batters]

Note: Includes Tellamia intricata in Guiry (1997); see Nielsen & McLachlan (1986).

PHAEOPHILALES

PHAEOPHILACEAE

PHAEOPHILA Hauck 1876

dendroides (P.L. Crouan & H.M. Crouan) Batters

ULVALES

CAPSOSIPHONACEAE

CAPSOSIPHON Gobi 1879

fulvescens (C. Agardh) Setchell & N.L. Gardner

[Capsosiphon aureolus (Kützing) Gobi]

MONOSTROMATACEAE

MONOSTROMA Thuret 1854

grevillei (Thuret) Wittrock

obscurum (Kützing) J. Agardh

[Ulvaria obscura (Kützing) Gayral]

oxyspermum (Kützing) Doty

[Monostroma orbiculatum Thuret]

[Monostroma crepidinium Farlow]

[Monostroma latissimum Wittrock]

[Monostroma wittrockii Bornet]

PROTOMONOSTROMA K.L. Vinogradova

undulatum (Wittrock) K.L. Vinogradova

[Monostroma undulatum Wittrock]

Note: Only one record for Britain (see Burrows 1991: 69).

ULVARIA Ruprecht 1850

fusca Ruprecht

[Monostroma fuscum (Ruprecht) Wittrock]

Note: Included by Burrows (1991: 67) in Monostroma obscurum and not listed by Guiry (1997);

retained here pending further investigation (see Nielsen et al., 1995).

ULVACEAE

BLIDINGIA Kylin 1947

chadefaudii (Feldmann) Bliding

Note: See Burrows (1991:78); not seen by her.

marginata (J. Agardh) P.J.L. Dangeard

[Enteromorpha marginata J. Agardh]

minima (Nägeli ex Kützing) Kylin

[Enteromorpha micrococca Kützing]

[Enteromorpha minima Nägeli ex Kützing]

ENTEROMORPHA Link 1820

Note: Enteromorpha lingulata J. Agardh is not included in Burrows (1991) and does not appear to have

been reported since Newton (1931: 69).

compressa (Linnaeus) Nees

Note: Records of E. usneoides Bonnemaison ex J. Agardh (e.g., Newton, 1931: 72) are included here,

although the species was recognized by Stegenga et al. (1997).

flexuosa (Wulfen) J. Agardh

intestinalis (Linnaeus) Nees

linza (Linnaeus) J. Agardh

muscoides (Clemente) Cremades

[Enteromorpha crinita Nees]

[Enteromorpha clathrata (Roth) Greville]

[Enteromorpha ramulosa (J.E. Smith) Carmichael]

prolifera (O.F. Müller) J. Agardh

[Enteromorpha torta (Mertens) Reinbold]

ralfsii Harvey

PERCURSARIA Bory de Saint-Vincent 1823

percursa (C. Agardh) Rosenvinge

ULVA Linnaeus 1753

lactuca Linnaeus

rigida C. Agardh

3130


UMBRAULVA E.H. Bae & I.K. Lee 2002

olivascens (P.J.L. Dangeard) E.H. Bae & I.K. Lee

[Ulva olivascens P.J.L. Dangeard]

[Ulva olivacea P.J.L. Dangeard, nom. illeg.]

Note: Phylogenetic analyses of ITS sequences strongly support the segregation of this and two other

western Pacific species of Ulva to the new genus Umbraulva (Bae & Lee, 2002).

ULVELLACEAE

ACROCHAETE Pringsheim 1862

Note: Species listed here require further investigation of their generic placement.

heteroclada J.A. Correa & R. Nielsen

Note: Isolated in culture from Chondrus crispus plants collected on the south coast of England (Brodie

& Plumb, pers. comm.).

operculata J.A. Correa & R. Nielsen

Note: Isolated in culture from Chondrus crispus plants collected on the south coast of England (Brodie

& Plumb, pers. comm.).

repens Pringsheim

[Acrochaete parasitica Oltmanns]

viridis (Reinke) R. Nielsen

[Entocladia viridis Reinke]

[Phaeophila viridis (Reinke) Burrows]

[Endoderma viride (Reinke) De Toni]

Note: As Entocladia viridis in Guiry (1997).

wittrockii (Wille) R. Nielsen

[Entocladia wittrockii Wille]

[Phaeophila wittrockii (Wille) R. Nielsen]

[Endoderma wittrockii (Wille) De Toni]

Note: As Entocladia wittrockii in Guiry (1997).

EPICLADIA Reinke 1889

flustrae Reinke

[Endoderma flustrae (Reinke) Batters]

[Entocladia flustrae (Reinke) W.R. Taylor]

Note: As Entocladia flustrae in Guiry (1997); see Nielsen (1984).

perforans (Huber) R. Nielsen

[Endoderma perforans Huber]

[Entocladia perforans (Huber) Levring]

Note: As Entocladia perforans in Guiry (1997);

OCHLOCHAETE Thwaites ex Harvey 1849

hystrix Thwaites ex Harvey

[Ochlochaete ferox Huber]

[Chaetobolus gibbus Rosenvinge]

ULVELLA P.L. Crouan & H.M. Crouan 1859

lens P.L. Crouan & H.M. Crouan

[Pseudulvella applanata Setchell & N.L. Gardner]

PRASIOLALES

PRASIOLACEAE

PRASIOLA (C. Agardh) Meneghini 1838

calophylla (Carmichael ex Greville) Kützing

Note: See Rindi et al. (1999) for recent records of this species and P. crispa from the west of

Ireland, mainly in urban situations.

crispa (Lightfoot) Kützing

furfuracea (Mertens ex Hornemann) Kützing

stipitata Suhr ex Jessen

ROSENVINGIELLA P.C. Silva 1957

polyrhiza (Rosenvinge) P.C. Silva

[Gayella polyrhiza Rosenvinge]

Note: See Rindi et al. (1999) for recent records of this species from the west of Ireland, mainly in

urban situations. The taxonomic relationships between marine and terrestrial populations require

further studies (Rindi, pers. comm.).

ACROSIPHONIALES

ACROSIPHONIACEAE

ACROSIPHONIA J. Agardh 1846

arcta (Dillwyn) Gain

[Cladophora arcta (Dillwyn) Kützing]

[Spongomorpha arcta (Dillwyn) Kützing]

[Cladophora lanosa (Roth) Kützing]

[Spongomorpha centralis (Lyngbye) Kützing]

Note: Included in Guiry (1997) as Spongomorpha arcta; see Silva (in Silva, Basson & Moe 1996:

931-934) who advocate treating Acrosiphonia as a separate genus on the basis of number of nuclei

per cell.

sonderi (Kützing) Kornmann

[Cladophora sonderi Kützing]

Note: Requires confirmation as to occurrence in the area.

SPONGOMORPHA Kützing 1843

aeruginosa (Linnaeus) Hoek

[Chlorochytrium inclusum Kjellman]

[Cladophora pallida (Kjellman) Batters]

[Cladophora uncialis (O.F. Müller) Kützing]

[Codiolum petrocelidis Kuckuck]

[Cladophora bombycina (Kjellman) Batters]

UROSPORA J.E. Areschoug 1866

penicilliformis (Roth) J.E. Areschoug

[Urospora bangioides (Harvey) Holmes & Batters]

[Urospora isogona (J.E. Smith) Batters]

[Urospora mirabilis J.E. Areschoug]

wormskioldii (Mertens ex Hornemann) Rosenvinge

[Codiolum gregarium A. Braun]

[Urospora collabens (C. Agardh) Holmes & Batters]

3332


CLADOPHORALES

CLADOPHORACEAE

CHAETOMORPHA Kützing 1845

Note: A complete revision of the genus Chaetomorpha is required.

aerea (Dillwyn) Kützing

Note: Included in Chaetomorpha linum by Burrows (1991), but the synonymy was not accepted by

Silva, Basson & Moe (1996: 759).

crassa (C. Agardh) Kützing

Note: Included in Chaetomorpha linum by Burrows (1991), but the synonymy was not accepted by

Silva, Basson & Moe (1996: 759).

linum (O.F. Müller) Kützing

litorea Harvey

Note: Conferva litorea Harvey is a nom. illeg. and the name dates from Harvey (1858: 87); see Silva,

Basson & Moe (1996: 766).

melagonium (F. Weber & D. Mohr) Kützing

CLADOPHORA Kützing 1843

Note: Cladophora fracta (O.F. Müller ex Vahl) Kützing and C. glomerata (Linnaeus) Kützing are

considered here as freshwater species that occasionally extend into slightly saline waters. Cladophora

aegagropila should perhaps also be included in this category (see Burrows, 1991: 4, 146, 174).

aegagropila (Linnaeus) Trevisan

[Cladophora brownii (Dillwyn) Harvey]

albida (Nees) Kützing

[Cladophora neesiorum (C. Agardh) Kützing]

[Cladophora falcata Harvey]

[Cladophora corymbifera Kützing]

[Cladophora magdalenae Harvey]

battersii Hoek

coelothrix Kützing

[Cladophora repens Harvey]

dalmatica Kützing

flexuosa (O.F. Müller) Kützing

[Cladophora gracilis Kützing]

globulina (Kützing) Kützing

Note: Mainly a freshwater species but also found in saltmarshes (Burrows, 1991:155).

hutchinsiae (Dillwyn) Kützing

[Conferva hutchinsiae Dillwyn]

[Cladophora rectangularis (A.W. Griffiths ex Harvey) Harvey]

laetevirens (Dillwyn) Kützing

lehmanniana (Lindenberg) Kützing

[Cladophora utriculosa Kützing]

[Cladophora macallana Harvey]

liniformis Kützing

pellucida (Hudson) Kützing

[Cladophora pseudopellucida Hoek]

[Cladophora trichotoma (C. Agardh) Kützing]

prolifera (Roth) Kützing

pygmaea Reinke

retroflexa (Bonnemaison ex P.L. Crouan & H.M. Crouan) Hoek

rupestris (Linnaeus) Kützing

sericea (Hudson) Kützing

[Cladophora rudolphiana (C. Agardh) Kützing]

[Cladophora hirta Kützing]

[Cladophora glaucescens A.W. Griffiths ex Harvey]

[Cladophora balliana Harvey]

vagabunda (Linnaeus) Hoek

[Cladophora expansa (Mertens) Kützing]

RHIZOCLONIUM Kützing 1843

riparium (Roth) Harvey

[Rhizoclonium implexum (Dillwyn) Kützing]

Note: Burrows (1991: 175) considered Rhizoclonium implexum, R. riparium and R. tortuosum

conspecific, but this has not been generally accepted. Rhizoclonium implexum is sometimes referred to

Rhizoclonium riparium var. implexum (Dillwyn) Rosenvinge (Koster, 1955; Silva, Basson & Moe,

1996: 786).

tortuosum (Dillwyn) Kützing

[Rhizoclonium lubricum Setchell & N.L. Gardner]

[Chaetomorpha capillaris (Kützing) Børgesen, nom. illeg.]

[Chaetomorpha tortuosa (Dillwyn) Kleen]

[Rhizoclonium arenosum (Carmichael) Kützing]

WITROCKIELLACEAE

WITTROCKIELLA Wille 1909

paradoxa Wille

BRYOPSIDALES

BRYOPSIDACEAE

BRYOPSIS J.V. Lamouroux 1809

hypnoides J.V. Lamouroux

plumosa (Hudson) C. Agardh

CHAETOSIPHONACEAE

BLASTOPHYSA Reinke 1889

rhizopus Reinke

CODIACEAE

CODIUM Stackhouse 1797

adhaerens C. Agardh

bursa (Linnaeus) C. Agardh

Note: Listed in Guiry (1997) as Codium bursa (Olivi) C. Agardh; the basionym is, however, Alcyonium

bursa Linnaeus (1758: 803); see Silva, Basson & Moe (1996: 898).

fragile (Suringar) Hariot

Note: Two introduced subspecies have been found in the area: C. fragile subsp. tomentosoides (Goor)

P.C. Silva and C. fragile subsp. atlanticum (A.D. Cotton) P.C. Silva. The former seems to be gradually

displacing the latter except perhaps in more northerly locations. Codium fragile subsp. atlanticum

includes Codium amphibium Moore.

3534


tomentosum Stackhouse

vermilara (Olivi) Delle Chiaje

DERBESIACEAE

DERBESIA Solier 1846

marina (Lyngbye) Solier

[Halicystis ovalis (Lyngbye) J.E. Areschoug]

tenuissima (Moris & De Notaris) P.L. Crouan & H.M. Crouan

OSTREOBIACEAE

OSTREOBIUM Bornet & Flahault 1889

quekettii Bornet & Flahault

CHLOROCYSTIDALES

CHLOROCYSTIDACEAE

HALOCHLOROCOCCUM P.J.L. Dangeard 1965

moorei (N.L. Gardner) Kornmann & Sahling

[Chlorochytrium moorei N.L. Gardner]

[Chlorochytrium willei Printz]

KLEBSORMIDIALES

STICHOCOCCACEAE

STICHOCOCCUS Nägeli 1849

bacillaris Nägeli

ULOTRICHALES

ULOTRICHACEAE

EUGOMONTIA Kornmann 1960

sacculata Kornmann

ULOTHRIX Kützing 1833

flacca (Dillwyn) Thuret

[Ulothrix consociata Wille]

[Ulothrix pseudoflacca Wille]

implexa (Kützing) Kützing

speciosa (Carmichael) Kützing

[Lyngbya speciosa Carmichael]

subflaccida Wille

Note: Included in Ulothrix flacca by Burrows (1991).

HETEROKONTOPHYTAPHAEOPHYCEAE

SPHACELARIALES

SPHACELARIACEAE

CLADOSTEPHUS C. Agardh 1817

spongiosus (Hudson) C. Agardh

Note: Cladostephus spongiosus f. verticillatus (Lightfoot) Prud’homme van Reine is a generally

recognised entity.

SPHACELARIA Lyngbye 1819

caespitula Lyngbye

cirrosa (Roth) C. Agardh

[Sphacelaria bipinnata (Kützing) Sauvageau]

[Sphacelaria hystrix Suhr ex Reinke]

fusca (Hudson) S.F. Gray

mirabilis (Reinke ex Batters) Prud’homme van Reine

[Battersia mirabilis Reinke ex Batters]

nana Nägeli ex Kützing

[Sphacelaria britannica Sauvageau]

[Sphacelaria olivacea Pringsheim]

plumigera Holmes

plumosa Lyngbye

[Chaetopteris plumosa (Lyngbye) Kützing]

plumula Zanardini

racemosa Greville

radicans (Dillwyn) C. Agardh

rigidula Kützing

[Sphacelaria furcigera Kützing]

tribuloides Meneghini

STYPOCAULACEAE

HALOPTERIS Kützing 1843

filicina (Grateloup) Kützing

STYPOCAULON Kützing 1843

scoparium (Linnaeus) Kützing

[Halopteris scoparia (Linnaeus) Sauvageau]

DICTYOTALES

DICTYOTACEAE

DICTYOTEAE

ZONARIEAE

DICTYOPTERIS J.V. Lamouroux 1809

polypodioides (A.P. De Candolle) J.V. Lamouroux

[Dictyopteris membranacea (Stackhouse) Batters]

Note: As Dictyopteris membranacea in Guiry (1997); see Silva (in Silva, Basson & Moe 1996: 924) with

respect to the “...confused status of this species”.

3736


DICTYOTA J.V. Lamouroux 1809

dichotoma (Hudson) J.V. Lamouroux

spiralis Montagne

[Dilophus spiralis (Montagne) G. Hamel]

[Dictyota ligulata Kützing]

PADINA Adanson 1763

pavonica (Linnaeus) Thivy

[Fucus pavonicus Linnaeus]

[Padina pavonia J.V. Lamouroux]

TAONIA J. Agardh 1848

atomaria (Woodward) J. Agardh

ECTOCARPALES

ACINETOSPORACEAE

ACINETOSPORA Bornet 1891

crinita (Carmichael) Sauvageau

[Acinetospora pusilla (A.W. Griffiths ex Harvey) De Toni]

FELDMANNIA G. Hamel 1939

irregularis (Kützing) G. Hamel

[Ectocarpus irregularis Kützing]

lebelii (J.E. Areschoug ex P.L. Crouan & H.M. Crouan) G. Hamel

[Ectocarpus lebelii J.E. Areschoug ex P.L. Crouan & H.M. Crouan]

Note: Requires confirmation as a species present in the area (see Guiry, 1978).

padinae (Buffham) G. Hamel

[Ectocarpus padinae (Buffham) Sauvageau]

paradoxa (Montagne) G. Hamel

[Feldmannia globifera (Kützing) G. Hamel]

[Ectocarpus globifer Kützing]

simplex (P.L. Crouan & H.M. Crouan) G. Hamel

[Ectocarpus simplex P.L. Crouan & H.M. Crouan]

HINCKSIA J.E. Gray 1864

fenestrata (Harvey ex Berkeley) P.C. Silva

[Ectocarpus fenestratus Harvey ex Berkeley]

[Giffordia fenestrata (Harvey ex Berkeley) Batters]

granulosa (J.E. Smith) P.C. Silva

[Ectocarpus granulosus (J.E. Smith) C. Agardh]

[Giffordia granulosa (J.E. Smith) G. Hamel]

hincksiae (Harvey) P.C. Silva

[Ectocarpus hincksiae Harvey]

[Giffordia hincksiae (Harvey) G. Hamel]

mitchelliae (Harvey) P.C. Silva

[Ectocarpus mitchelliae Harvey]

[Giffordia mitchelliae (Harvey) G. Hamel]

ovata (Kjellman) P.C. Silva

[Ectocarpus ovatus Kjellman]

[Giffordia ovata (Kjellman) Kylin]

sandriana (Zanardini) P.C. Silva

[Ectocarpus sandrianus Zanardini]

[Giffordia sandriana (Zanardini) G. Hamel]

secunda (Kützing) P.C. Silva

[Ectocarpus secundus Kützing]

[Giffordia secunda (Kützing) Batters]

POGOTRICHUM Reinke 1892

filiforme Reinke

[Litosiphon filiformis (Reinke) Batters]

PYLAIELLA Bory de Saint-Vincent 1823

Note: As “Pilayella” in Guiry (1997) and others; see Silva et al. (1999) regarding nomenclatural

conservation of the orthography “Pylaiella”.

littoralis (Linnaeus) Kjellman

CHORDARIACEAE

ACROTHRIX Kylin 1907

gracilis Kylin

[Acrothrix norvegica Levring]

ASPEROCOCCUS J.V. Lamouroux 1813

bullosus J.V. Lamouroux

[Asperococcus turneri (Dillwyn ex J.E. Smith) W.J. Hooker]

compressus A.W. Griffiths ex W.J. Hooker

fistulosus (Hudson) W.J. Hooker

[Hecatonema reptans (Kjellman) Kylin nom. illeg.]

[Ectocarpus repens Reinke]

scaber Kuckuck

BOTRYTELLA Bory de Saint-Vincent 1822

micromora Bory de Saint-Vincent

[Sorocarpus uvaeformis (Lyngbye) Pringsheim]

[Sorocarpus micromorus (Bory de Saint-Vincent) P.C. Silva]

Note: As Sorocarpus micromorus in Guiry (1997); see Kornmann & Sahling (1988) and Wynne (1998).

BUFFHAMIA Batters 1895

speciosa Batters

CHILIONEMA Sauvageau 1898

hispanicum (Sauvageau) R.L. Fletcher

[Ascocyclus hispanicus Sauvageau]

[Hecatonema hispanicum (Sauvageau) Loiseaux]

ocellatum (Kützing) Kornmann

[Chilionema nathaliae Sauvageau]

Note: This entity may be a phase in the life history of an Asperococcus, probably A. fistulosus

(see Fletcher, 1987: 197).

CHORDARIA C. Agardh 1817

flagelliformis (O.F. Müller) C. Agardh

CLADOSIPHON Kützing 1843

contortus (Thuret) Kylin

[Castagnea contorta Thuret]

zosterae (J. Agardh) Kylin

[Castagnea zosterae (J. Agardh) Thuret]

3938


CORYNOPHLAEA Kützing 1843

crispa (Harvey) Kuckuck

[Leathesia crispa Harvey]

CYLINDROCARPUS P.L. Crouan & H.M. Crouan 1851

microscopicus P.L. Crouan & H.M. Crouan

DICHOSPORANGIUM Hauck 1884

chordariae Wollny

[Streblonema chordariae (Wollny) A.D. Cotton, nom. illeg.]

DICTYOSIPHON Greville 1830

Note: Records of Dictyosiphon ekmanii from Britain (e.g., Newton, 1931) require confirmation.

chordarius J.E. Areschoug

[Dictyosiphon mesogloia J.E. Areschoug]

[Gobia baltica (Gobi) Reinke]

foeniculaceus (Hudson) Greville

[Dictyosiphon hippuroides (Lyngbye) Kützing]

ELACHISTA Duby 1830

flaccida (Dillwyn) Fries

fucicola (Velley) J.E. Areschoug

[Elachista grevillei Arnott ex Harvey]

scutulata (J.E. Smith) Duby

stellaris J.E. Areschoug

EUDESME J. Agardh 1882

virescens (Carmichael ex Berkeley) J. Agardh

[Castagnea virescens (Carmichael ex Berkeley) Thuret]

GIRAUDIA Derbès & Solier 1851

sphacelarioides Derbès & Solier

HALOTHRIX Reinke 1888

lumbricalis (Kützing) Reinke

HECATONEMA Sauvageau 1898

terminale (Kützing) Kylin

[Ectocarpus terminalis Kützing]

[Hecatonema maculans (F.S. Collins) Sauvageau]

Note: Includes Hecatonema maculans in Guiry (1997). This entity probably represents a mixture of

genotypes, with some culture studies showing an independent life history, whilst others indicate that it

is connected to Asperococcus/Punctaria (see Fletcher, 1987: 204).

HERPONEMA J. Agardh 1882

solitarium (Sauvageau) G. Hamel

[Ectocarpus solitarius Sauvageau]

valiantei (Bornet ex Sauvageau) G. Hamel

[Ectocarpus valiantei Bornet ex Sauvageau]

velutinum (Greville) J. Agardh

[Ectocarpus velutinus (Greville) Kützing]

ISTHMOPLEA Kjellman 1877

sphaerophora (Carmichael ex Harvey) Kjellman

KUETZINGIELLA Kornmann 1956

battersii (Bornet ex Sauvageau) Kornmann

[Ectocarpus battersii Bornet ex Sauvageau]

holmesii (Batters) Kornmann

[Ectocarpus holmesii Batters]

LAMINARIOCOLAX Kylin 1947

aecidioides (Rosenvinge) Burkhardt & Peters

[Gononema aecidioides (Rosenvinge) P.M. Pedersen]

[Myrionema aecidioides (Rosenvinge) Sauvageau]

Note: As Gononema aecidioides in Guiry (1997); see Burkhardt & Peters (1998).

tomentosoides (Farlow) Kylin

[Ectocarpus tomentosoides Farlow]

LEATHESIA S.F. Gray 1821

difformis (Linnaeus) J.E. Areschoug

[Leathesia tuberiformis (J.E. Smith) S.F. Gray]

LEBLONDIELLA G. Hamel 1939

densa (Batters) G. Hamel

[Myriotrichia densa Batters]

LEPTONEMATELLA P.C. Silva 1959

fasciculata (Reinke) P.C. Silva

[Leptonema fasciculatum Reinke]

LIEBMANNIA J. Agardh 1842

leveillei J. Agardh

[Mesogloia leveillei (J. Agardh) Meneghini]

LITOSIPHON Harvey 1849

laminariae (Lyngbye) Harvey

[Streblonema volubile (P.L. Crouan & H.M. Crouan) Thuret]

[Litosiphon hibernicus (T. Johnson) Batters]

[Litosiphon pusillus (Carmichael ex W.J. Hooker) Harvey]

MESOGLOIA C. Agardh 1817

lanosa P.L. Crouan & H.M. Crouan

vermiculata (J.E. Smith) S.F. Gray

MICROCORYNE Strömfelt 1888

ocellata Strömfelt

MICROSPONGIUM Reinke 1888

gelatinosum Reinke

Note: Inadvertently excluded from Guiry (1997).

globosum Reinke

[Myrionema polycladum Sauvageau]

[Hecatonema globosum (Reinke) Batters]

immersum (Levring) P.M. Pedersen

[Streblonema immersum Levring]

MIKROSYPHAR Kuckuck 1897

polysiphoniae Kuckuck

porphyrae Kuckuck

MYRIACTULA Kuntze 1898

areschougii (P.L. Crouan & H.M. Crouan) G. Hamel

[Myriactis areschougii (P.L. Crouan & H.M. Crouan) Batters]

chordae (J.E. Areschoug) Levring

[Elachista stellaris var. chordae J.E. Areschoug]

clandestina (P.L. Crouan & H.M. Crouan) Feldmann

[Elachista clandestina P.L. Crouan & H.M. Crouan]

[Ectocarpus clandestinus (P.L. Crouan & H.M. Crouan) Sauvageau]

haydenii (Gatty) Levring

[Myriactis haydenii (Gatty) Batters]

4140


rivulariae (Suhr) Feldmann

[Myriactis pulvinata Kützing]

stellulata (Harvey) Levring

[Myriactis stellulata (Harvey) Batters]

MYRIOCLADIA J. Agardh 1841

lovenii J. Agardh

tomentosa P.L. Crouan & H.M. Crouan

MYRIONEMA Greville 1827

corunnae Sauvageau

liechtensternii Hauck

[Hecatonema liechtensternii (Hauck) Batters]

magnusii (Sauvageau) Loiseaux

Note: See Fletcher (1987: 111). Probably a life-history phase of another species.

orbiculare J. Agardh

[Ascocyclus orbicularis (J. Agardh) Kjellman]

Note: Probably a life history phase of another species.

papillosum Sauvageau

strangulans Carmichael ex Greville

MYRIOTRICHIA Harvey 1834

clavaeformis Harvey

[Streblonema sphaericum (Derbès & Solier) Thuret ex Le Jolis]

[Myriotrichia filiformis Harvey]

[Myriotrichia repens Hauck]

Note: Inadvertently excluded from Guiry (1997). Myriotrichia repens is included in

synonymy on the authority of Fletcher (1987).

PETROSPONGIUM Nägeli ex Kützing 1858

berkeleyi (Greville) Nägeli ex Kützing

[Cylindrocarpus berkeleyi (Greville) P.L. Crouan & H.M. Crouan]

PHAEOSTROMA Kuckuck 1893

pustulosum Kuckuck

[Phaeostroma prostratum (Gran) Kuckuck]

[Streblonema aequale Oltmanns]

PHYCOCELIS Strömfelt 1888

crouaniorum Athanasiadis

[Chilionema reptans (P.L. Crouan & H.M. Crouan) Sauvageau]

[Hecatonema reptans Sauvageau]

Note: As Chilionema reptans in Guiry (1997); see Athanasiadis (1996b: 178, as Phycocelis crouani). M.J.

Wynne (pers. comm.) points out that as the epithet commemorates the brothers Crouan it should be in

the plural rather than in the singular as employed by Athanasiadis (1996b).

foecunda Strömfelt

[Ascocyclus foecundus (Strömfelt) Reinke]

[Ascocyclus saccharinae A.D. Cotton]

[Hecatonema foecundum (Strömfelt) Loiseaux]

[Chilionema foecundum (Strömfelt) R.L. Fletcher]

Note: As Chilionema foecundum in Guiry (1997); see Athanasiadis (1996b: 178).

PROTECTOCARPUS Kuckuck ex Kornmann 1955

speciosus (Børgesen) Kuckuck ex Kornmann

[Hecatonema speciosum (Børgesen) A.D. Cotton]

PUNCTARIA Greville 1830

crispata (Kützing) Batters

latifolia Greville

plantaginea (Roth) Greville

tenuissima (C. Agardh) Greville

[Desmotrichum undulatum (J. Agardh) Reinke]

[Punctaria undulata J. Agardh]

[Punctaria baltica (Kützing) Batters]

SAUVAGEAUGLOIA G. Hamel ex Kylin 1940

griffithsiana (A.W. Griffiths ex Harvey) G. Hamel ex Kylin

[Mesogloia griffithsiana A.W. Griffiths ex Harvey]

[Sauvageaugloia chordariaeformis (P.L. Crouan & H.M. Crouan) Kylin]

Note: Includes Sauvageaugloia chordariaeformis in Guiry (1997).

SPERMATOCHNUS Kützing 1843

paradoxus (Roth) Kützing

SPHAEROTRICHIA Kylin 1940

divaricata (C. Agardh) Kylin

[Chordaria divaricata C. Agardh]

SPONGONEMA Kützing 1849

tomentosum (Hudson) Kützing

[Ectocarpus tomentosus (Hudson) Lyngbye]

[Ectocarpus luteolus Sauvageau]

STICTYOSIPHON Kützing 1843

adriaticus Kützing

griffithsianus (Le Jolis) Holmes & Batters

[Phloeospora brachiata Bornet]

soriferus (Reinke) Rosenvinge

tortilis (Ruprecht) Reinke

STILOPHORA J. Agardh 1841

tenella (Esper) P.C. Silva

[Stilophora rhizodes (C. Agardh) J. Agardh]

STILOPSIS Kuckuck 1929

lejolisii (Thuret) Kuckuck & Nienburg ex G. Hamel

[Spermatochnus lejolisii (Thuret) Reinke]

STREBLONEMA Derbès & Solier 1851

breve (Sauvageau) De Toni

[Ectocarpus brevis Sauvageau]

fasciculatum Thuret

helophorum (Rosenvinge) Batters

infestans (H. Gran) Batters

[Endodictyon infestans H. Gran]

intestinum (Reinsch) Batters

parasiticum (Sauvageau) Levring

[Ectocarpus parasiticus Sauvageau]

stilophorae (P.L. Crouan & H.M. Crouan) Kylin

[Ectocarpus stilophorae P.L. Crouan & H.M. Crouan]

tenuissimum Hauck

zanardinii (P.L. Crouan & H.M. Crouan) De Toni

4342


STREPSITHALIA Bornet ex Sauvageau 1896

buffhamiana (Batters) Batters

[Streblonema buffhamiana Batters]

STRIARIA Greville 1828

attenuata (C. Agardh) Greville

ULONEMA Foslie 1893

rhizophorum Foslie

ECTOCARPACEAE

ECTOCARPUS Lyngbye 1819

fasciculatus Harvey

[Ectocarpus landsburgii Harvey]

siliculosus (Dillwyn) Lyngbye

[Ectocarpus penicillatus (C. Agardh) Kjellman]

[Ectocarpus confervoides (Roth) Le Jolis]

SCYTOSIPHONACEAE

COLPOMENIA (Endlicher) Derbès & Solier 1851

peregrina (Sauvageau) Hamel

COMPSONEMA Kuckuck 1899

microspongium (Batters) Kornmann

[Ectocarpus microspongius Batters]

minutum (C. Agardh) Kornmann

[Ectocarpus minutus C. Agardh]

saxicolum (Kuckuck) Kornmann

[Myrionema saxicolum Kuckuck]

PETALONIA Derbès & Solier 1850

fascia (O.F. Müller) Kuntze

[Phyllitis fascia (O.F. Müller) Kützing]

filiformis (Batters) Kuntze

[Phyllitis filiformis Batters]

zosterifolia (Reinke) Kuntze

[Phyllitis zosterifolia Reinke]

SCYTOSIPHON C. Agardh 1820

dotyi M.J. Wynne

lomentaria (Lyngbye) Link

[Scytosiphon pygmaeus Reinke]

SORAPION Kuckuck 1894

simulans Kuckuck

[Lithoderma simulans (Kuckuck) Batters]

kjellmanii (Wille) Rosenvinge

Note: May be conspecific with Sorapion simulans (Fletcher, 1987: 90) or a phase in the life-history of

Porterinema fluviatile (Porter) Waern (Pedersen, 1981).

STRAGULARIA Strömfelt 1886

clavata (Harvey) G. Hamel

[Ralfsia clavata (Harvey) P.L. Crouan & H.M. Crouan]

[Ralfsia disciformis P.L. Crouan & H.M. Crouan]

Note: In the area, this entity appears generally to be a phase in the life history of Petalonia fascia but

there are reports of a direct life history (see Fletcher, 1987: 257).

spongiocarpa (Batters) G. Hamel

[Ralfsia spongiocarpa Batters]

SYMPHYOCARPUS Rosenvinge 1893

strangulans Rosenvinge

RALFSIALES

RALFSIACEAE

PETRODERMA Kuckuck 1897

maculiforme (Wollny) Kuckuck

PSEUDOLITHODERMA Svedelius ex Kjellman & Svedelius 1910

extensum (P.L. Crouan & H.M. Crouan) S. Lund

[Lithoderma extensum (P.L. Crouan & H.M. Crouan) G. Hamel]

roscoffense Loiseaux

RALFSIA Berkeley 1843

Note: Ralfsia pusilla (Strömfelt) Batters was excluded from the flora of the area by Fletcher (1987: 244).

verrucosa (J.E. Areschoug) J.E. Areschoug

CUTLERIALES

CUTLERIACEAE

CUTLERIA Greville 1830

multifida (J.E. Smith) Greville

[Aglaozonia parvula (Greville) Zanardini]

[Aglaozonia reptans (P.L. Crouan & H.M. Crouan) Kützing]

ZANARDINIA Zanardini 1841

typus (Nardo) G. Furnari

[Zanardinia prototypus (Nardo) Nardo, nom. illeg.]

[Zanardinia collaris (Montagne) P.L. Crouan & H.M. Crouan]

Note: As Zanardinia prototypus in Guiry (1997); see Furnari, Cormaci & Serio (1999).

SPOROCHNALES

SPOROCHNACEAE

CARPOMITRA Kützing 1843

costata (Stackhouse) Batters

SPOROCHNUS C. Agardh 1817

pedunculatus (Hudson) C. Agardh

TILOPTERIDALES

TILOPTERIDACEAE

HAPLOSPORA Kjellman 1872

globosa Kjellman

TILOPTERIS Kützing 1849

mertensii (Turner) Kützing

4544


DESMARESTIALES

ARTHROCLADIACEAE

ARTHROCLADIA Duby 1830

villosa (Hudson) Duby

DESMARESTIACEAE

DESMARESTIA J.V. Lamouroux 1813

aculeata (Linnaeus) J.V. Lamouroux

dresnayi J.V. Lamouroux ex Leman

ligulata (Lightfoot) J.V. Lamouroux

viridis (O.F. Müller) J.V. Lamouroux

LAMINARIALES

ALARIACEAE

ALARIA Greville 1830

esculenta (Linnaeus) Greville

UNDARIA Suringar 1873

pinnatifida (Harvey) Suringar

CHORDACEAE

CHORDA Stackhouse 1797

filum (Linnaeus) Stackhouse

HALOSIPHONACEAE

HALOSIPHON Jaasund 1957

tomentosus (Lyngbye) Jaasund

[Chorda tomentosa Lyngbye]

Note: As Chorda tomentosa in Guiry (1997); see Peters (1998).

LAMINARIACEAE

LAMINARIA J.V. Lamouroux 1813

digitata (Hudson) J.V. Lamouroux

hyperborea (Gunnerus) Foslie

[Laminaria cloustoni Edmonston]

ochroleuca Bachelot de la Pylaie

saccharina (Linnaeus) J.V. Lamouroux

Note: Laminaria longricruris Bachelot de la Pylaie is listed in Guiry (1997) following Morton (1994);

confirmation of its occurrence in the area is required.

PHYLLARIACEAE

SACCORHIZA Bachelot de la Pylaie 1829

polyschides (Lightfoot) Batters

[Saccorhiza bulbosa (Hudson) Bachelot de la Pylaie]

FUCALES

CYSTOSEIRACEAE

BIFURCARIA Stackhouse 1809

bifurcata R. Ross

[Bifurcaria tuberculata (Hudson) Stackhouse]

CYSTOSEIRA C. Agardh 1820

baccata (S.G. Gmelin) P.C. Silva

[Cystoseira fibrosa (Hudson) C. Agardh]

foeniculacea (Linnaeus) Greville

humilis Schousboe ex Kützing

Note: Cystoseira humilis var. myriophylloides (Sauvageau) J.H. Price & D.M. John occurs on the

south-west coast of England (fide J. Feldmann via G.T. Boalch; see Parke & Dixon (1976: 562, 563,

as Cystoseira myriophylloides Sauvageau).

nodicaulis (Withering) M. Roberts

[Cystoseira granulata C. Agardh]

tamariscifolia (Hudson) Papenfuss

[Cystoseira ericoides (Linnaeus) C. Agardh]

HALIDRYS Lyngbye 1819

siliquosa (Linnaeus) Lyngbye

FUCACEAE

ASCOPHYLLUM Stackhouse 1809

nodosum (Linnaeus) Le Jolis

[Ascophyllum mackayi (Turner) Holmes & Batters]

Note: Ascophyllum nodosum var. mackayi (Turner) Børgesen & Jónsson is generally regarded as an

ecotype but is included here because of its legal status in Britain as a named entity in conservation

legislation (as Ascophyllum nodosum ecad mackaii). The epithet “mackaii”, named for James Townsend

Mackay (1775-1862), is here corrected to “mackayi” to be consistent with “harveyi” and “hennedyi”.

FUCUS Linnaeus 1753

ceranoides Linnaeus

cottonii M.J. Wynne & Magne

[Fucus muscoides (A.D. Cotton) Feldmann & Magne nom. illeg.]

distichus Linnaeus

[Fucus anceps Harvey & Ward ex Carruthers]

[Fucus distichus subsp. anceps (Harvey & Ward ex Carruthers) H.T. Powell

evanescens C. Agardh

[Fucus distichus subsp. evanescens (C. Agardh) H.T. Powell]

[Fucus distichus subsp. edentatus (C. Agardh) H.T. Powell]

serratus Linnaeus

spiralis Linnaeus

vesiculosus Linnaeus

PELVETIA Decaisne & Thuret 1845

canaliculata (Linnaeus) Decaisne & Thuret

HIMANTHALIACEAE

HIMANTHALIA Lyngbye 1819

elongata (Linnaeus) S.F. Gray

[Himanthalia lorea (Linnaeus) Lyngbye]

Adey, W.H. Athanasiadis, A. & Lebednik, P.A. (2001).

Re-instatement of Leptophytum and its type

Leptophytum laeve: taxonomy and biogeography

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(Corallinales, Rhodophyta). European Journal of

Phycology, 36: 191-204.

Athanasiadis, A. (1996a). Morphology and classification

of the Ceramioideae (Rhodophyta) based on

phylogenetic principles. Opera Botanica, 127:

1-221.

Athanasiadis, A. (1996b). Taxonomisk litteratur och

biogeografi av Skandinaviska rödalger och

brunalger. 280 pp. Algologia, Göteborg.

Bae, E.H. & Lee, I.K. (2002). Umbraulva, a new genus

based on Ulva japonica (Holmes) Papenfuss

(Ulvaceae, Chlorophyta). Algae, 16: 217-231.

Bailey, J.C. (1999). Phylogenetic positions of

Lithophyllum incrustans and Titanoderma

pustulatum (Corallinaceae, Rhodophyta) based

on 18S rRNA gene sequence analyses, with a

revised classification of the Lithophylloideae.

Phycologia, 38: 208-216.

Batters, E.A.L. (1902). A catalogue of the British Marine

Algae. Journal of Botany, British and Foreign, 40:

1-107.

Brodie, J. & Irvine, L.M. (1997). A comparison of

Porphyra dioica sp. nov. and P. purpurea (Roth)

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Burkhardt, E. & Peters, A.F. (1998). Molecular evidence

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Laminariocolax (Phaeophyceae, Ectocarpales

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Campbell, S.J. & Woelkerling, W.J. (1990). Are

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Rhodophyta) distinct genera? Phycologia, 29:

114-125.

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21: 128-208.

Chamberlain, Y.M. (1994a). Mastophoroideae Setchell.

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British Isles. Volume 1. Rhodophyta. Part 1.

Introduction, Nemaliales, Gigartinales. xi + 252

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Düwel, L. & Wegeberg, S. (1996). The typification and

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4746


SARGASSACEAE

SARGASSUM C. Agardh 1820

muticum (Yendo) Fensholt

Note: Unattached species of Sargassum reported as cast-up plants in the 19th century are excluded

(e.g., Harvey, 1849).

INCERTAE SEDIS

PILINIA Kützing 1843

rimosa Kützing

[Waerniella lucifuga (Kuckuck) Kylin]

Note: Listed as Waerniella lucifuga in Guiry (1996); see Hooper, South & Nielsen (1987).

The taxonomic position of the genus within the Phaeophyceae is currently uncertain.

CHORISTOCARPACEAE

CHORISTOCARPUS Zanardini 1860

tenellus Zanardini

XANTHOPHYCEAEVAUCHERIALES

VAUCHERIACEAE

VAUCHERIA A.P. De Candolle 1801

arcassonensis P.J.L. Dangeard

compacta (F.S. Collins) F.S. Collins ex W.R. Taylor

coronata Nordstedt

dichotoma (Linnaeus) Martius

[Vaucheria pyrifera Kützing]

erythrospora T.A. Christensen

intermedia Nordstedt

litorea C. Agardh

longicaulis Hoppaugh

Note: Note included in Christensen (1987); subsequently reported by the late T. Christensen.

medusa T.A. Christensen

minuta Blum & Conover

piloboloides Thuret

sescuplicaria T.A. Christensen

subsimplex P.L. Crouan & H.M. Crouan

[Vaucheria sphaerospora Nordstedt]

synandra Woronin

velutina C. Agardh

[Vaucheria thuretii Woronin]

vipera Blum

Note: Christensen (1987: 30) notes that there are no authenticated records of this species in the area,

although an illustration in Carter (1933: 151, as Vaucheria woroniniana) of material from Essex in his

opinion resembles this species.

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4948


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